Cylinder Head (4-cyl) Acura TSX II

Special Tools

Cylinder Head

SPECIAL TOOL DESCRIPTION CHART

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Engine Compression Inspection

Note. After this inspection, you must reset the ECM/PCM. Otherwise, the ECM/PCM will continue to stop the fuel injectors from operating.

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1. Warm up the engine to normal operating temperature (cooling fan comes on).
2. Turn the ignition switch to LOCK (0).
3. Connect the HDS to the DLC (see step 2 on «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-4-cyl) ).
4. Turn the ignition switch to ON (II).
5. Make sure the HDS communicates with the vehicle and the ECM/PCM. If it does not communicate, troubleshoot the DLC circuit (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-4-cyl__dlc-circuit-troubleshooting) ).
6. Select ALL INJECTORS STOP in the PGM-FI INSPECTION menu with the HDS.
7. Turn the ignition switch to LOCK (0).
8. Remove the four ignition coils and the four spark plugs (see «IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-4-cyl) ).
9. Attach a compression gauge to the spark plug hole.
10. Step on the accelerator pedal to open the throttle fully, then crank the engine with the starter motor, and measure the compression. Compression Pressure: Above 930 kPa (9.5 kgf/cm 2 , 135 psi)
11. Measure the compression on the remaining cylinders. Maximum Variation: Within 200 kPa (2.0 kgf/cm 2 , 28 psi)
12. If the compression is not within specifications, perform a cylinder leak down test to determine the problem area. Then check the following items, and remeasure the compression: Incorrect valve clearance Confirmation of cam timing Damaged or worn valves and seats Damaged cylinder head gasket Damaged or worn piston rings Damaged or worn piston and cylinder bore
13. Remove the compression gauge from the spark plug hole.
14. Install the four spark plugs and the four ignition coils (see «IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-4-cyl) ).
15. Select the ECM/PCM reset (see «ECM/PCM RESET»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-4-cyl__ecmpcm-reset) ) in the PGM-FI INSPECTION menu to cancel ALL INJECTORS STOP with the HDS.

VTEC Rocker Arm Test

Special Tools Required

1. VTEC Air Stopper 07ZAJ-PNAA200
2. VTEC Air Adapter 07ZAJ-PNAA101 (2)
3. Air Joint Adapter 07ZAJ-PNAA300
4. Air Pressure Regulator 07AAJ-PNAA101

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1. Remove the four ignition coils and the four spark plugs (see «IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-4-cyl) ).
2. Remove the cylinder head cover (see «CYLINDER HEAD COVER REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
3. Rotate the crankshaft pulley clockwise. Make sure that the intake secondary rocker arm (A) and the intake mid rocker arm (B) are separated and that the intake secondary rocker arm and the intake mid rocker arm should move independently: If the mid and secondary rocker arms move together, remove the mid, primary, and secondary rocker arms as an assembly, and check that the pistons in the rocker arms move smoothly. If any rocker arm needs replacing, replace the mid, primary, and secondary rocker arms as an assembly, then retest. If the secondary rocker arm moves independently, go to step 4.
4. Check that the air pressure on the shop air compressor gauge indicates over 400 kPa (4.08 kgf/cm 2 , 58.0 psi).
5. Inspect the valve clearance (see «VALVE CLEARANCE ADJUSTMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__valve-clearance-adjustment) ).
6. Remove the sealing bolt (A) from the relief hole, and install the VTEC air stopper (B).
7. Remove the No. 2 and No. 3 camshaft holder bolts, and install the VTEC air adapters (C) finger-tight.
8. Connect the air joint adapter (D) and the air pressure regulator (E).
9. Loosen the valve on the air pressure regulator, and apply the specified air pressure. Specified Air Pressure: 290 kPa (3.0 kgf/cm 2 , 42 psi)
10. With the specified air pressure applied, rotate the crankshaft pulley clockwise. The secondary rocker arm (A) should move together with the mid rocker arm (B) and the primary rocker arm (C): If the mid, primary, and secondary rocker arms move independently, remove the mid, primary, and the secondary rocker arms as an assembly, and check that the pistons in the rocker arms move smoothly. If any rocker arm needs replacing, replace the mid, primary, and secondary rocker arms as an assembly, then retest. If the mid, primary, and secondary rocker arms move together, go to step 11.
11. Remove the air pressure regulator, the air joint adapter, the VTEC air adapters, and the VTEC air stopper.
12. Torque the camshaft holder mounting bolts to 22 N.m (2.2kgf.m, 16 lbf.ft).
13. Torque the sealing bolt to 10 N.m (1.0 kgf.m, 7.4 lbf.ft).
14. Install the cylinder head cover (see «CYLINDER HEAD COVER INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
15. Install the four spark plugs and the four ignition coils (see «IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-4-cyl) ).

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1. Remove the cam chain (see «CAM CHAIN REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-removal) ).
2. Loosen the rocker arm adjusting screws (see step 2 on «ROCKER ARM ASSEMBLY REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
3. Remove the camshaft holder (see step 3 on «ROCKER ARM ASSEMBLY REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
4. Remove the intake camshaft.
5. Check that the VTC actuator is locked by turning the VTC actuator counterclockwise. If it is not locked, turn the VTC actuator clockwise until it stops, then recheck it. If it is still not locked, replace the VTC actuator.
6. Seal the retard holes (A) in the No. 1 camshaft journal with tape and a wire tie.
7. Seal one of the advance holes (A) with tape.
8. Apply air to the unsealed advance hole to release the lock.
9. Check that the VTC actuator moves smoothly. If the VTC actuator does not move smoothly, replace the VTC actuator.
10. Remove the wire tie, the tape, and the adhesive residue from the camshaft journal.
11. Make sure the punch marks on the VTC actuator and the exhaust camshaft sprocket are facing up, then set the camshafts in the cylinder head (see step 7 on «CYLINDER HEAD INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
12. Set the camshaft holders and cam chain guide B in place (see step 8 on «CYLINDER HEAD INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
13. Tighten the camshaft holder bolts to the specified torque (see step 9 on «CYLINDER HEAD INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
14. Hold the camshaft, and turn the VTC actuator clockwise until you hear it click. Make sure to lock the VTC actuator by turning it.
15. Install the cam chain (see «CAM CHAIN INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-installation) ).
16. Adjust the valve clearance (see «VALVE CLEARANCE ADJUSTMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__valve-clearance-adjustment) ).

Valve Clearance Adjustment

Special Tools Required

1. Locknut Wrench 07MAA-PR70120
2. Adjuster 07MAA-PR70110

Note. Connect the HDS to the DLC (see step 2 on GENERAL TROUBLESHOOTING INFORMATION ) and monitor ECT SENSOR 1 with the HDS. Adjust the valve clearance only when the engine coolant temperature is less than 100 °F (38 °C).

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1. Remove the cylinder head cover (see «CYLINDER HEAD COVER REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
2. Set the No. 1 piston at top dead center (TDC). The punch mark (A) on the VTC actuator and the punch mark (B) on the exhaust camshaft sprocket should be at the top. Align the TDC marks (C) on the VTC actuator and the exhaust camshaft sprocket.
3. Select the correct feeler gauge for the valve clearance you are going to check. Valve Clearance Intake: 0.21-0.25 mm (0.008-0.010in) Exhaust: 0.25-0.29 mm (0.010-0.011 in) EXHAUST
4. Insert the feeler gauge (A) between the adjusting screw (B) and the end of the valve stem on the No. 1 cylinder, and slide it back and forth; you should feel a slight amount of drag.
5. If you feel too much or too little drag, loosen the locknut with the locknut wrench and the adjuster, and turn the adjusting screw until the drag on the feeler gauge is correct.
6. Tighten the locknut to the specified torque, and recheck the clearance. Repeat the adjustment if necessary. Specified Torque.7x0.75 mm 14N.m (1.4kgf.m, 10lbf.ft) Apply new engine oil to the nut threads.
7. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90c).
8. Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.
9. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
10. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.
11. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
12. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.
13. Install the cylinder head cover (see «CYLINDER HEAD COVER INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).

Crankshaft Pulley Removal and Installation

Special Tools Required

1. Holder Handle 07JAB-001020B
2. Crankshaft Pulley Holder 07AAB-RJAA100
3. Socket, 19 mm 07JAA-001020A or equivalent

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1. Remove the right front wheel.
2. Remove the front splash shield (see step 22 on «ENGINE INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-assembly-4-cyl__engine-installation) ).
3. Remove the drive belt (see «DRIVE BELT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/charging-system/#charging-system-4-cyl__drive-belt-removalinstallation) ).
4. Hold the pulley with the holder handle (A) and the crankshaft pulley holder (B).
5. Remove the bolt with a socket, 19 mm (C) and a breaker bar, then remove the crankshaft pulley.

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1. Clean the crankshaft pulley (A), the crankshaft (B), the bolt (C), and the washer (D). Lubricate with new engine oil as shown.
2. Install the crankshaft pulley, and hold the pulley with the holder handle (A) and the crankshaft pulley holder (B).
3. Torque the bolt to 49 N.m (5.0 kgf.m, 36 lbf.ft) with a torque wrench and a socket, 19 mm (C). Do not use an, impact wrench. If the pulley bolt or crankshaft are new, torque the bolt to 177 N.m (18.0 kgf.m, 130 lbf.ft), then remove the bolt and torque it to 49 N.m (5.0 kgf.m, 36 lbf.ft).
4. Tighten the pulley bolt an additional 90 °.
5. Install the drive belt (see «DRIVE BELT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/charging-system/#charging-system-4-cyl__drive-belt-removalinstallation) ).
6. Install the front splash shield (see step 43 on «ENGINE MOUNT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-assembly-4-cyl) ).
7. Install the right front wheel.

Cam Chain Removal

Note. Keep the cam chain away from magnetic fields.

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1. Remove the right front wheel.
2. Remove the front splash shield (see step 22 on «ENGINE INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-assembly-4-cyl__engine-installation) ).
3. Remove the drive belt (see «DRIVE BELT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/charging-system/#charging-system-4-cyl__drive-belt-removalinstallation) ).
4. Turn the crankshaft so its white mark (A) lines up with the pointer (B). NOTE: The other pointer (C) is not used.
5. Remove the cylinder head cover (see «CYLINDER HEAD COVER REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
6. Set the No. 1 piston at top dead center (TDC). The punch mark (A) on the VTC actuator and the punch mark (B) on the exhaust camshaft sprocket should be at the top. Align the TDC marks (C) on the VTC actuator and the exhaust camshaft sprocket.
7. Disconnect the VTC oil control solenoid valve connector (A) and remove the harness clamp (B).
8. Remove the VTC oil control solenoid valve (see «VTC OIL CONTROL SOLENOID VALVE REMOVAL/TEST/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#vtecvtc-4-cyl) ).
9. Remove the crankshaft pulley (see «CRANKSHAFT PULLEY REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__crankshaft-pulley-removal-and-installation) ).
10. Lift and support the engine with a jack and a wood block under the oil pan.
11. Remove the ground cable (A), then remove the side engine mount bracket (B).
12. Remove the side engine mount bracket (A).
13. Remove the cam chain case (A) and the spacer (B).
14. Loosely install the crankshaft pulley.
15. Turn the crankshaft counterclockwise to compress the auto-tensioner.
16. Rotate the crankshaft counterclockwise to align the holes on the lock (A) and the auto-tensioner (B), then insert a 1.2 mm (3/64 in) diameter pin (C) into the holes. Turn the crankshaft clockwise to secure the pin. NOTE: If the holes in the lock and the auto-tensioner do not align, continue to rotating the crankshaft counterclockwise until the holes align, then install the pin.
17. Remove the auto-tensioner.
18. Remove cam chain guide B.
19. Remove cam chain guide A and the tensioner arm (B).
20. Remove the cam chain.

Cam Chain Installation

Special Tools Required

Camshaft Lock Pin Set 07AAB-RWCA120

Note. Keep the cam chain away from magnetic fields. Before doing this procedure, check that the VTC actuator is locked by turning the VTC actuator counterclockwise. If not locked, turn the VTC actuator clockwise until it stops, then recheck it. If it is still not locked, replace the VTC actuator.

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1. Set the crankshaft to top dead center (TDC). Align the TDC mark (A) on the crankshaft sprocket with the pointer (B) on the engine block.
2. Set the camshafts to TDC. The punch mark (A) on the VTC actuator and the punch mark (B) on the exhaust camshaft sprocket should be at the top. Align the TDC marks (C) on the VTC actuator and the exhaust camshaft sprocket.
3. To hold the intake camshaft, insert a camshaft lock pin set (A) into the maintenance hole in CMP pulse plate A (B) and through the No. 5 rocker shaft holder (C).
4. To hold the exhaust camshaft, insert a camshaft lock pin set (A) into the maintenance hole in CMP pulse plate B (D) and through the No. 5 rocker shaft holder (C).
5. Install the cam chain on the crankshaft sprocket with the colored link plate (A) aligned with the mark (B) on the crankshaft sprocket.
6. Install the cam chain on the VTC actuator and the exhaust camshaft sprocket with the punch marks (A) aligned with the center of the two colored link plates (B).
7. Install cam chain guide A and the tensioner arm (B).
8. Install cam chain guide B.
9. Compress the auto-tensioner when replacing the cam chain. Remove the diameter pin (A) from the auto-tensioner that was installed during removal. Turn the plate (B) counterclockwise, to release the lock, then press the rod (C), and set the first cam (D) to the first edge of the rack (E). Insert the 1.2 mm (3/64in) diameter pin into the holes (F). NOTE: If the chain tensioner is not set up as described, the tensioner will become damaged.
10. Install the auto-tensioner.
11. Remove the diameter pin from the auto-tensioner.
12. Remove the camshaft lock pin set.
13. Check the chain case oil seal for damage. If the oil seal is damaged, replace the chain case oil seal (see «CAM CHAIN CASE OIL SEAL INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-case-oil-seal-installation) ).
14. Remove the old liquid gasket from the chain case mating surfaces, the bolts, and the bolt holes.
15. Clean and dry the chain case mating surfaces.
16. Apply liquid gasket (P/N 08717-0004, 08718-0003, or 08718-0009) to the engine block mating surface of the chain case and to the inside edge of the threaded bolt holes. Install the component within 5 minutes of applying the liquid gasket. NOTE: Apply a 2.5 mm (0.098 in) diameter bead of liquid gasket along the broken line (A) and (B). Apply a 3.0 mm (0.118 in) diameter bead of liquid gasket along the broken line (C). If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.
17. Apply liquid gasket (P/N 08717-0004, 08718-0003, or 08718-0009) to the oil pan mating surface of the chain case, and to the inside edge of the threaded bolt holes. Install the component within 5 minutes of applying the liquid gasket. NOTE: Apply a 2.5 mm (0.098 in) diameter bead of liquid gasket along the broken line (A). Apply a 3.0 mm (0.118 in) diameter bead of liquid gasket along the broken line (B). If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.
18. Install the spacer (A), then install a new O-ring (B) on the chain case. Set the edge of the chain case (C) to the edge of the oil pan (D), then install the chain case on the engine block (E). Wipe off the excess liquid gasket on the oil pan and the chain case mating area. NOTE: When installing the chain case, do not slide the bottom surface onto the oil pan mounting surface. Wait at least 30 minutes before filling the engine with oil. Do not run the engine for at least 3 hours after installing the chain case.
19. Install the side engine mount bracket (A), then tighten the side engine mount bracket mounting bolts.
20. Install the side engine mount bracket (A), then loosely install the new side engine mount bracket mounting bolts.
21. Install the ground cable (B).
22. Remove the jack and the wood block.
23. Tighten the new side engine mount bracket mounting bolts in the numbered sequence shown.
24. Install the crankshaft pulley (see «INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
25. Install the VTC oil control solenoid valve (see «VTC OIL CONTROL SOLENOID VALVE REMOVAL/TEST/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#vtecvtc-4-cyl) ).
26. Connect the VTC oil control solenoid valve connector (A) and install the harness clamp (B).
27. Install the cylinder head cover (see «CYLINDER HEAD COVER INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
28. Install the drive belt (see «DRIVE BELT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/charging-system/#charging-system-4-cyl__drive-belt-removalinstallation) ).
29. Install the front splash shield (see step 43 on «ENGINE MOUNT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-assembly-4-cyl) ).
30. Install the right front wheel.
31. Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-4-cyl) ).

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1. Remove the chain case cover.
2. Turn the crankshaft counterclockwise to compress the auto-tensioner.
3. Rotate the crankshaft counterclockwise to align the holes on the lock (A) and the auto-tensioner (B), then insert a 1.2 mm (3/64 in) diameter pin (C) into the holes. Turn the crankshaft clockwise to secure the pin. NOTE: If the holes in the lock and the auto-tensioner do not align, continue to rotating the crankshaft counterclockwise until the holes align, then install the pin.
4. Remove the auto-tensioner.

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1. Install the auto-tensioner. NOTE: Check the auto-tensioner cam position. If the position is not aligned, set the first cam to the first edge of the rack (see step 9 on «CAM CHAIN AUTO-TENSIONER REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) )
2. Remove the 1.2 mm (3/64 in) diameter pin from the auto-tensioner.
3. Remove all of the old liquid gasket from the chain case cover mating surfaces, the bolts, and the bolt holes.
4. Clean and dry the chain case cover mating surfaces.
5. Apply liquid gasket (P/N 08717-0004, 08718-0003, or 08718-0009) to the chain case mating surface of the chain case cover and to the inside edge of the threaded bolt holes. Install the component within 5 minutes of applying the liquid gasket. NOTE: Apply a 2.5 mm (0.098 in) diameter bead of liquid gasket along the broken line (A). If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.
6. Install the chain case cover.

Note. Wait at least 30 minutes before filling the engine with oil. Do not run the engine for at least 3 hours after installing the chain case cover.

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Cam Chain Case Oil Seal Installation

Special Tools Required

1. Driver Handle, 15 x 135L 07749-0010000
2. Attachment, 52 x 55 mm 07746-0010400

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1. Clean and dry the crankshaft oil seal.
2. Apply a light coat of new engine oil to the lip of the chain case oil seal.
3. Use the driver handle 15 x 135L and the attachment, 52 x 55 mm to drive a new oil seal (A) squarely into the chain case to the specified installed height.
4. Measure the distance between the chain case surface (A) and the oil seal (B).

Oil Seal Installed Height: 32.4-33.1 mm (1.276-1.303 in)

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Cam Chain Inspection

Special Tools Required

Cam Chain Inspection Gauge 07AAJ-RWCA100

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1. Remove the right front wheel.
2. Remove the front splash shield (see step 22 on «ENGINE INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-assembly-4-cyl__engine-installation) ).
3. Remove the cylinder head cover (see «CYLINDER HEAD COVER REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
4. Rotate the crankshaft pulley two turns clockwise.
5. Set the No. 1 piston at top dead center (TDC). The punch mark (A) on the VTC actuator and the punch mark (B) on the exhaust camshaft sprocket should be at the top. Align the TDC marks (C) on the VTC actuator and the exhaust camshaft sprocket.
6. Measure the clearance between the cam chain (A) and the tensioner arm (B) with the cam chain inspection gauge. If the clearance is OK, go to step 17 . If the clearance is more than the service limit, go to step 7. Chain-to-Arm Clearance Service Limit: MIL on with P0341: 4.3 mm (0.169 in) Without MIL: 5.5 mm (0.217 in)
7. Remove the oil pan (see «OIL PAN REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-block-4-cyl) ).
8. Lift and support the engine with a jack and a wood block under the engine block. NOTE: Do not hit the oil pump and the baffle plate when placing the jack on the edge of the engine block.
9. Remove the cam chain (see «CAM CHAIN REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-removal) ), and check the teeth on the crankshaft sprocket, the VTC actuator, and the exhaust camshaft sprocket for wear and damage. If any of them are worn or damaged, replace if necessary.
10. Check the oil passage on the auto-tensioner for clogs. If the auto-tensioner is clogged, replace it.
11. Measure the length of the oil pump chain auto-tensioner rod. Oil Pump Chain Auto-Tensioner Rod Length Service Limit: 13 mm (0.51 in)
12. If the length is over the service limit, replace the oil pump chain (see «OIL PUMP CHAIN REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/lubrication-system/#engine-lubrication-4-cyl__oil-pump-chain-replacement) ). When replacing, check the teeth on the crankshaft sprocket and the oil pump sprocket for wear and damage. If any of them are worn or damaged, replace if necessary.
13. Check the oil passage on the oil pump chain auto-tensioner for clogs. If the auto-tensioner is clogged, replace it.
14. Install the cam chain (see «CAM CHAIN INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-installation) ).
15. Remove the jack and the wood block.
16. Install the oil pan (see «CKP PULSE PLATE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-block-4-cyl) ).
17. Install the cylinder head cover (see «CYLINDER HEAD COVER INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
18. Install the front splash shield (see step 43 on «ENGINE MOUNT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-assembly-4-cyl) ).
19. Install the right front wheel.

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1. Remove the engine cover.
2. Remove the dipstick (A), and disconnect the breather hose (B).
3. Remove the two bolts (C) securing the EVAP canister purge valve bracket.
4. Remove the four ignition coils (see «IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-4-cyl) ).
5. Remove the cylinder head cover.

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1. Check the spark plug seals for damage. If any seals are damaged, replace it.
2. Thoroughly clean the head cover gasket and the groove. NOTE: Check and, if necessary, replace the head cover gasket.
3. Install the head cover gasket (A) in the groove of the cylinder head cover (B). Make sure the head cover gasket is seated securely.
4. Remove all of the old liquid gasket from the chain case and the No. 5 rocker shaft holder.
5. Clean the head cover contacting surfaces with a shop towel.
6. Apply liquid gasket, P/N 08717-0004, 08718-0003, or 08718-0009, on the chain case and the No. 5 rocker shaft holder mating areas (A). Install the component within 5 minutes of applying the liquid gasket. NOTE: If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.
7. Set the spark plug seals (A) on the spark plug tubes. Place the cylinder head cover (B) on the cylinder head, then slide the cover slightly back and forth to seat the head cover gasket.
8. Inspect the spark plug seals for damage.
9. Inspect the cover washers (C). Replace any washer that is damaged or deteriorated.
10. Tighten the bolts in three steps. In the final step torque bolts, in sequence, to 12 N.m (1.2 kgf.m, 8.7 lbf.ft). NOTE: Wait at least 30 minutes before filling the engine with oil. Do not run the engine for at least 3 hours after installing the head cover.
11. Install the two bolts (A) securing the EVAP canister purge valve bracket.
12. Connect the breather hose (B) and install the dipstick (C).
13. Install the four ignition coils (see «IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-4-cyl) ).
14. Install the engine cover.

Scheme 443

Cylinder Head Removal

Note. Use fender covers to avoid damaging painted surfaces. To avoid damaging the wires and terminals, unplug the wiring connectors carefully while holding the connector portion. Connect the HDS to the DLC (see step 2 on GENERAL TROUBLESHOOTING INFORMATION ), and monitor ECT SENSOR 1. To avoid damaging the cylinder head, wait until the engine coolant temperature drops below 100 °F (38 °C) before loosening the cylinder head bolts. Mark all wiring and hoses to avoid misconnection. Also, be sure that they do not contact any other wiring or hoses, or interfere with other parts.

Scheme 444

Scheme 445

Scheme 446

Scheme 447

Scheme 448

Scheme 449

Scheme 450

1. Remove the strut brace (see «STRUT BRACE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/exterior-body-panels/#frame-4-cyl) ).
2. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-4-cyl__fuel-pressure-relieving) ).
3. Drain the engine coolant (see «COOLANT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
4. Remove the drive belt (see «DRIVE BELT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/charging-system/#charging-system-4-cyl__drive-belt-removalinstallation) ).
5. Remove the intake manifold (see «REMOVAL»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-4-cyl) ).
6. Remove the warm up TWC (see «WARM UP TWC REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/exhaust/#catalytic-converter-system-4-cyl__warm-up-twc-removalinstallation) ).
7. Remove the EVAP canister hose (A).
8. Remove the quick-connect fitting cover (A), then disconnect the fuel feed hose (B) (see «FUEL LINE/QUICK-CONNECT FITTING REMOVAL»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-4-cyl__fuel-linequick-connect-fitting-removal) ).
9. Disconnect the four fuel injector connectors (A), the engine mount control solenoid connector (B), and remove the ground cables (C).
10. Remove the four bolts securing the EVAP canister purge valve bracket.
11. Disconnect the upper radiator hose (A), the heater hoses (B), and the water bypass hose (C).
12. A/T model: Disconnect the water bypass hose (D).
13. Remove the two bolts (A) securing the connecting pipe (B).
14. Disconnect the water bypass hose (C).
15. Disconnect the following engine wire harness connectors, and remove the wire harness clamps from the cylinder head: ECT sensor 1 connector CMP sensor A (Intake) connector CMP sensor B (Exhaust) connector Rocker arm oil control solenoid connector Rocker arm oil pressure switch connector EVAP canister purge valve connector VTC oil control solenoid valve connector Engine oil pressure switch connector
16. Remove the cam chain (see «CAM CHAIN REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-removal) ).
17. Remove the rocker arm assembly (see «ROCKER ARM ASSEMBLY REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
18. Remove the cylinder head bolts. To prevent warpage, loosen the bolts in sequence 1/3 turn at a time; repeat the sequence until all bolts are loosened.
19. Remove the cylinder head

Scheme 451

Scheme 452

1. Remove the cylinder head cover (see «CYLINDER HEAD COVER REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
2. Remove CMP sensor A (see «CMP SENSOR A REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#vtecvtc-4-cyl) ).
3. Hold the camshaft with an open-end wrench, then loosen the bolt.
4. Remove CMP pulse plate A.
5. Install CMP pulse plate A in the reverse order of removal.

Scheme 453

Scheme 454

1. Remove the cylinder head cover (see «CYLINDER HEAD COVER REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
2. Remove CMP sensor B (see «CMP SENSOR B REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-4-cyl) ).
3. Hold the camshaft with an open-end wrench, then loosen the bolt.
4. Remove CMP pulse plate B.
5. Install CMP pulse plate B in the reverse order of removal.

Scheme 455

Scheme 456

Scheme 457

Scheme 458

Scheme 459

1. Remove the cylinder head cover (see «CYLINDER HEAD COVER REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
2. Hold the camshaft with an open-end wrench, then loosen the VTC actuator mounting bolt and the exhaust camshaft sprocket mounting bolt. NOTE: Do not remove the VTC actuator and the exhaust camshaft sprocket mounting bolts.
3. Set the No. 1 piston at top dead center (TDC). The punch mark (A) on the VTC actuator and the punch mark (B) on the exhaust camshaft sprocket should be at the top. Align the TDC marks (C) on the VTC actuator and the exhaust camshaft sprocket.
4. Remove the chain case cover (see step 1 on «CAM CHAIN AUTO-TENSIONER REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
5. Rotate the crankshaft counterclockwise to align the holes on the lock (A) and the auto-tensioner (B), then insert a 1.2 mm (3/64 in) diameter pin (C) into the holes. Turn the crankshaft clockwise to secure the pin. NOTE: If the holes in the lock and the auto-tensioner do not align, continue to rotating the crankshaft counterclockwise until the holes align, then install the pin.
6. Turn the crankshaft clockwise to secure the pin and the TDC on the No. 1 cylinder.
7. Loosen the rocker arm adjusting screws (see step 2 on «ROCKER ARM ASSEMBLY REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
8. Remove the camshaft holder bolts (see step 3 on «ROCKER ARM ASSEMBLY REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
9. Remove the five camshaft holders and cam chain guide 6.
10. Carefully tip up the intake camshaft on the transmission side of the engine until there is enough slack in the chain to lift the chain off of the VTC actuator's teeth.
11. Remove the intake and exhaust camshafts while keeping some tension on the cam chain.
12. Secure the cam chain to the A/C compressor suction hose or the power steering hose with a wire tie to prevent the chain from falling down into the chain case.
13. Remove the VTC actuator and the exhaust camshaft sprocket.
14. Install the VTC actuator and the exhaust camshaft sprocket. NOTE: Install the VTC actuator while in the unlocked position.
15. Apply new engine oil to the threads of the VTC actuator and the exhaust camshaft sprocket mounting bolts, then loosely install them.
16. Turn the VTC actuator clockwise until you hear it click. Make sure to lock the VTC actuator by turning it.
17. Remove the wire tie while keeping light tension on the cam chain.
18. Slide the intake and exhaust camshafts in at an angle to allow the cam chain to slip over the VTC actuator's teeth and the exhaust sprocket's teeth.
19. Line up the marks made in step 3 for each cam.
20. Apply new engine oil to the camshaft journals and lobes on both cams, and reinstall the five camshaft holders and cam chain guide B in place.
21. Tighten the camshaft holder bolts to the specified torque (see step 9 on «CYLINDER HEAD INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
22. Hold the camshaft with an open-end wrench, then tighten the bolts. Specified Torque VTC Actuator Mounting Bolt: 12x1.25 mm 113 N.m (11.5 kgf.m, 83 lbf.ft) Exhaust Camshaft Sprocket Mounting Bolt: 10x1.25 mm 72 N.m (7.3 kgf.m, 53 lbf.ft)
23. Remove the 1.2 mm (3/64 in) diameter pin from the auto-tensioner.
24. Remove all of the old liquid gasket from the chain case cover mating surfaces, the bolts, and the bolt holes.
25. Clean and dry the chain case cover mating surfaces.
26. Apply liquid gasket, P/N 08717-0004, 08718-0003, or 08718-0009 to the chain case mating surface of the chain case cover, and to the inside edge of the threaded bolt holes. Install the component within 5 minutes of applying the liquid gasket (see step 5 on «CAM CHAIN CASE OIL SEAL INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-case-oil-seal-installation) ).
27. Install the chain case cover (see step 6 on «CAM CHAIN CASE OIL SEAL INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-case-oil-seal-installation) ).
28. Adjust the valve clearance (see «VALVE CLEARANCE ADJUSTMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__valve-clearance-adjustment) ).
29. Install the cylinder head cover (see «CYLINDER HEAD COVER INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).

Cylinder Head Inspection for Warpage

1. Remove the cylinder head (see «CYLINDER HEAD REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cylinder-head-removal) ).
2. Inspect the camshaft (see «CAMSHAFT INSPECTION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__camshaft-inspection) ).
3. Check the cylinder head for warpage. Measure along the edges, and three ways across the center: If warpage is less than 0.05 mm (0.0020 in) cylinder head resurfacing is not required. Maximum resurface limited to the cylinder head height standard as shown.

Cylinder Head Warpage

Standard (New): 0.05 mm (0.0020 in) max.

Cylinder Head Height

Standard (New): 103.95-104.05 mm (4.0925-4.0964 in)

Scheme 460

Scheme 461

Scheme 462

Scheme 463

1. Remove the cam chain (see «CAM CHAIN REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-removal) ).
2. Loosen the rocker arm and the adjusting screws (A).
3. Remove the camshaft holder bolts. To prevent damaging the camshafts, loosen the bolts, in sequence, two turns at a time. NOTE: Bolt 1 is not on all engines.
4. Remove cam chain guide B (A), the camshaft holders (B), and the camshafts (C).
5. Insert the bolts (A) into the rocker shaft holder, then remove the rocker arm assembly (B).

Scheme 464

Rocker Arm and Shaft Disassembly/Reassembly

Note. Identify parts as they are removed so they can be reinstalled in their original locations. Inspect the rocker arm shaft and rocker arms (see ROCKER ARM AND SHAFT INSPECTION ). If reused, the rocker arms must be installed in their original location. When removing, or installing the rocker arm assembly, do not remove the camshaft holder bolts. The bolts will keep the holders and the rocker arms on the shaft. Bundle the intake rocker arms with rubber bands to keep them together as a set, and remove the bands after the intake rocker arms have been installed. Prior to reassembling, clean all the parts in solvent, dry them, and apply new engine oil to all contact points. When replacing the intake rocker arm assembly, remove the fastening hardware from the new intake rocker arm assembly.

Scheme 465

Scheme 466

Scheme 467

Scheme 468

Scheme 469

1. Remove the rocker arm assembly (see «ROCKER ARM ASSEMBLY REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
2. Disassemble the rocker arm assembly (see «ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__rocker-arm-and-shaft-disassemblyreassembly) ).
3. Measure the diameter of the shaft at the first rocker location.
4. Zero the gauge (A) to the shaft diameter.
5. Measure the inside diameter of the rocker arm, and check it for an out-of-round condition. Rocker Arm-to-Shaft Clearance Standard (New): Intake: 0.018-0.059 mm (0.00071 -0.00232 in) Exhaust: 0.018-0.056 mm (0.00071-0.00220 in) Service Limit: 0.08 mm (0.0031 in)
6. Repeat for all rocker arms and both shafts. If the clearance is beyond the service limit, replace the rocker shaft and all out of service limit rocker arms. If any VTEC rocker arm needs replacement, replace the rocker arms (primary, mid, and secondary), as a set.
7. Inspect the rocker arm pistons (A). Push on each piston manually. If it does not move smoothly, replace the rocker arm set. NOTE: Apply new engine oil to the rocker arm pistons when reassembling.
8. Reassemble the rocker arm assembly (see «ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__rocker-arm-and-shaft-disassemblyreassembly) ).
9. Install the rocker arm assembly (see «ROCKER ARM ASSEMBLY INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).

Camshaft Inspection

Note. Do not rotate the camshaft during inspection.

Scheme 470

Scheme 471

Scheme 472

Scheme 473

1. Remove the cylinder head (see «CYLINDER HEAD REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cylinder-head-removal) ).
2. Remove the rocker arm assembly (see «ROCKER ARM ASSEMBLY REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
3. Disassemble the rocker arm assembly (see «ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__rocker-arm-and-shaft-disassemblyreassembly) ).
4. Put the rocker shaft holders, the camshaft, and the camshaft holders on the cylinder head, then tighten the bolts, in sequence, to the specified torque. NOTE: If the engine does not have bolt 21, skip it and continue the torque sequence. Specified Torque 8x1.25 mm 22 N.m (2.2 kgf.m, 16 lbf.ft) 6x1.0 mm 12 N.m (1.2 kgf.m, 8.7 lbf.ft) 6 x 1.0 mm Bolts: 21, 22, 23
5. Seat the camshaft by pushing it away from the camshaft pulley end of the cylinder head.
6. Zero the dial indicator against the end of the camshaft, then push the camshaft back and forth, and read the end play. If the end play is beyond the service limit, replace the cylinder head and recheck. If it is still beyond the service limit, replace the camshaft. Camshaft End Play Standard (New): 0.05-0.20 mm (0.0020-0.0079 in) Service Limit: 0.4 mm (0.016 in)
7. Loosen the camshaft holder bolts two turns at a time, in a crisscross pattern. Then remove the camshaft holders from the cylinder head.
8. Lift the camshafts out of the cylinder head, and wipe them clean, then inspect the lift ramps. Replace the camshaft if any lobes are pitted, scored, or excessively worn.
9. Clean the camshaft journal surfaces in the cylinder head, then set the camshafts back in place. Place a plastigage strip across each journal.
10. Install the camshaft holders, then tighten the bolts to the specified torque as shown in step 4 .
11. Remove the camshaft holders. Measure the widest portion of plastigage on each journal: If the camshaft-to-holder clearance is within the service limits, go to step 13 . If the camshaft-to-holder clearance is beyond the service limit, and the camshaft has been replaced, replace the cylinder head. If the camshaft-to-holder clearance is beyond the service limit, and the camshaft has not been replaced, go to step 12. Camshaft-to-Holder Oil Clearance Standard (New): No. 1 Journal: 0.030-0.069 mm (0.00118-0.00272 in) No. 2, 3, 4, 5 Journals: 0.060-0.099 mm (0.00236-0.00390 in) Service Limit: 0.15 mm (0.0059 in)
12. Check the total runout with the camshaft supported on V-blocks: If the total runout of the camshaft is within the standard, replace the cylinder head. If the total runout is beyond the standard, replace the camshaft and recheck the camshaft-to-holder oil clearance. If the oil clearance is still beyond the standard, replace the cylinder head. Camshaft Total Runout Standard (New): 0.03 mm (0.0012 in) max.
13. Measure cam lobe height.

CAM LOBE HEIGHT STANDARD CHART

PRI: Primary MID: Mid SEC: Secondary

C/C: Cam Chain

Scheme 474

Valve, Spring, and Valve Seal Removal

Special Tools Required

Valve Spring Compressor Attachment 07757-PJ101OA

Note. Identify the valves and the valve springs as they are removed so that each item can be reinstalled in its original position.

Scheme 475

Scheme 476

Scheme 477

Scheme 478

1. Remove the cylinder head (see «CYLINDER HEAD REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cylinder-head-removal) ).
2. Remove the rocker arm assembly (see «ROCKER ARM ASSEMBLY REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
3. Using an appropriate-sized socket (A) and a plastic mallet (B), lightly tap the spring retainer to loosen the valve cotters.
4. Install the valve spring compressor attachment and the valve spring compressor. Compress the valve spring, and remove the valve cotters.
5. Remove the valve spring compressor and the valve spring compressor attachment, then remove the spring retainer, the valve spring and the valve.
6. Install the valve guide seal remover (A).
7. Remove the valve seal.
8. Remove the valve spring seat.

Valve Inspection

1. Remove the valves (see «VALVE, SPRING, AND VALVE SEAL REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__valve-spring-and-valve-seal-removal) ).
2. Measure the valve in these areas. Intake Valve Dimensions A Standard (New): 35.85-36.15 mm (1.4114-1.4232 in) B Standard (New): 108.5-109.1 mm (4.272-4.295 in) C Standard (New): 5.475-5.485 mm (0.21555-0.21594 in) C Service Limit: 5.445 mm (0.21437 in) Exhaust Valve Dimensions A Standard (New): 30.85-31.15 mm (1.2146-1.2264 in) B Standard (New): 108.4-109.0 mm (4.268-4.291 in) C Standard (New): 5.450-5.460 mm (0.21457-0.21496 in) C Service Limit: 5.42 mm (0.2134 in)

Scheme 479

Valve Stem-to-Guide Clearance Inspection

1. Remove the valves (see «VALVE, SPRING, AND VALVE SEAL REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__valve-spring-and-valve-seal-removal) ).
2. Subtract the O.D. of the valve stem, measured with a micrometer, from the I.D. of the valve guide, measured with an inside micrometer or a ball gauge. Take the measurements in three places along the valve stem and three places inside the valve guide. The difference between the largest guide measurement and the smallest stem measurement should not exceed the service limit.

Intake Valve Stem-to-Guide Clearance

Standard (New): 0.030-0.055 mm (0.00118-0.00217 in)

Service Limit: 0.08 mm (0.0031 in)

Exhaust Valve Stem-to-Guide Clearance

Standard (New): 0.055-0.080 mm (0.00217-0.00315 in)

Service Limit: 0.11 mm (0.0043 in)

Scheme 480

Valve Guide Replacement

Special Tools Required

1. Valve Guide Driver, 5.35 x 9.7 mm 07742-0010100
2. Valve Guide Reamer, 5.5 mm 07HAH-PJ7A100

Scheme 481

Scheme 482

Scheme 483

Scheme 484

Scheme 485

1. Inspect the valve stem-to-guide clearance (see «VALVE INSPECTION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__valve-inspection) ).
2. As illustrated, use a commercially available air-impact valve guide driver (A) modified to fit the diameter of the valve guides. In most cases, the same procedure can be done using the valve guide driver, 5.35 x 9.7 mm and a conventional hammer.
3. Select the proper replacement guides, and chill them in the freezer section of a refrigerator for about an hour.
4. Use a hot plate or oven to evenly heat the cylinder head to 300 °F (150 °C). Monitor the temperature with a cooking thermometer. Do not get the head hotter than 300 °F (150 °C); excessive heat may loosen the valve seats.
5. Working from the camshaft side, use the driver and an air hammer to drive the guide about 2 mm (0.08 in) towards the combustion chamber. This will knock off some of the carbon and make removal easier. Hold the air hammer directly in line with the valve guide to prevent damaging the driver. Wear safety goggles or a face shield.
6. Turn the head over, and drive the guide out toward the camshaft side of the head.
7. If a valve guide still will not move, drill it out with an 8 mm (5/16 in) drill bit, then try again. NOTE: Drill guides only in extreme cases; you could damage the cylinder head if the guide breaks.
8. Remove the new guide(s) from the freezer, one at a time, as you need them.
9. Apply a thin coat of new engine oil to the outside of the new valve guide. Install the guide from the camshaft side of the head; use the valve guide driver to drive the guide in to the specified installed height (A) of the guide (B). If you have all 16 guides to do, you may have to reheat the head. Valve Guide Installed Height Intake: 15.2-16.2 mm (0.598-0.638 in) Exhaust: 15.5-16.5 mm (0.610-0.650 in)
10. Coat both the valve guide reamer, 5.5 mm and the valve guide with cutting oil.
11. Rotate the valve guide reamer clockwise to the full length of the valve guide bore.
12. Continue to rotate the reamer clockwise while removing it from the bore.
13. Thoroughly wash the guide in detergent and water to remove any cutting residue.
14. Check the clearances with a valve (see «VALVE INSPECTION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__valve-inspection) ). Verify that a valve slides into the intake and exhaust valve guides without sticking.
15. Inspect the valve seating. If necessary renew the valve seat using a valve seat cutter (see «VALVE SEAT RECONDITIONING»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).

Scheme 486

Scheme 487

Scheme 488

Scheme 489

1. Inspect the valve stem-to-guide clearance (see «VALVE INSPECTION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__valve-inspection) ). If the valve guides are worn, replace them (see «VALVE GUIDE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__valve-guide-replacement) ) before cutting the valve seats.
2. Renew the valve seats in the cylinder head using a valve seat cutter.
3. Carefully cut a 45 ° seat, removing only enough material to ensure a smooth and concentric seat.
4. Bevel the upper and lower edges at the angles shown in the illustration. Check the width of the seat and adjust accordingly.
5. Make one more very light pass with the 45 ° cutter to remove any possible burrs caused by the other cutters. Valve Seat Width Standard (New): 1.25-1.55 mm (0.0492-0.0610 in) Service Limit: 2.00 mm (0.0787 in)
6. After resurfacing the seat, inspect for even valve seating. Apply Prussian Blue compound (A) to the valve face. Insert the valve in its original location in the head, then lift it and snap it closed against the seat several times.
7. The actual valve seating surface (B), as shown by the blue compound, should be centered on the seat: If it is too high (closer to the valve stem), you must make a second cut with the 67.5 ° cutter to move it down, then one more cut with the 45 ° cutter to restore seat width. If it is too low (close to the valve edge), you must make a second cut with the 35 ° cutter (intake side) or the 30 ° cutter (exhaust side) to move it up, then make one more cut with the 45 ° cutter to restore seat width. NOTE: The final cut should always be made with the 45 ° cutter.
8. Insert the intake and exhaust valves in the head, and measure the valve stem installed height (A). Intake Valve Stem Installed Height Standard (New): 44.0-44.5 mm (1.732-1.752 in) Service Limit: 44.7 mm (1.760 in) Exhaust Valve Stem Installed Height Standard (New): 44.0-44.5 mm (1.732-1.752 in) Service Limit: 44.7 mm (1.760 in)
9. If the valve stem installed height is beyond the service limit, replace the valve and recheck. If it is still beyond the service limit, replace the cylinder head; the valve seat in the head is too deep.

Valve, Spring, and Valve Seal Installation

Special Tools Required

1. Stem Seal Driver 07PAD-0010000
2. Valve Spring Compressor Attachment 07757-PJ1010A

Scheme 490

Scheme 491

1. Coat the valve stems with new engine oil. Install the valves in the valve guides.
2. Check that the valves move up and down smoothly.
3. Install the spring seats on the cylinder head.
4. Install the new valve seals (A) using the 5.5 mm side of the stem seal driver (B). NOTE: The exhaust valve seal (C) has a black spring (D), and the intake valve seal (E) has a white or silver spring (F); they are not interchangeable.
5. Install the valve spring and the spring retainer. Place the end of the valve spring with the closely wound coils toward the cylinder head.
6. Install the valve spring compressor attachment and the valve spring compressor. Compress the valve spring, and install the valve cotters.
7. Remove the valve spring compressor and the valve spring compressor attachment.
8. Lightly tap the end of each valve stem two or three times with a plastic mallet (A) to ensure proper seating of the valve and the valve cotters. Tap the valve stem only along its axis so you do not bend the stem.

Note. Be sure to raise the head off the work bench so the valve is not possibly damaged.

Scheme 492

Scheme 493

Scheme 494

Scheme 495

Scheme 496

1. Reassemble the rocker arm assembly (see «ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__rocker-arm-and-shaft-disassemblyreassembly) ).
2. Clean and dry the No. 5 rocker shaft holder mating surface.
3. Apply liquid gasket (P/N 08717-0004, 08718-0003, or 08718-0009) to the cylinder head mating surface of the No. 5 rocker shaft holder and to the inside edge of the threaded bolt holes. Install the component within 5 minutes of applying the liquid gasket. NOTE: Apply a 2.5 mm (0.098 in) diameter bead of liquid gasket along the broken line (A). If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.
4. Install the lost motion assembly in the cylinder head. NOTE: Apply new engine oil to the lost motion assembly.
5. Insert the bolts (A) into the rocker shaft holder, then install the rocker arm assembly (B) on the cylinder head.
6. Remove the bolts from the rocker shaft holder.
7. Make sure the punch marks on the VTC actuator and the exhaust camshaft sprocket are facing up, then set the camshafts (A) in the holder. Apply new engine oil to the camshaft journals and lobes.
8. Set the camshaft holders (B) and cam chain guide B (C) in place.
9. Tighten the bolts to the specified torque. NOTE: If the engine does not have bolt 21, skip it and continue the torque sequence. Specified Torque 8x1.25 mm 22 N.m (2.2 kgf.m, 16 lbf.ft) 6x1.0 mm 12 N.m (1.2 kgf.m, 8.7 lbf.ft) 6x1.0mmBolts: 21, 22, 23
10. Install the cam chain (see «CAM CHAIN INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-installation) ), then adjust the valve clearance (see «VALVE CLEARANCE ADJUSTMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__valve-clearance-adjustment) ).

Scheme 497

Scheme 498

Scheme 499

Scheme 500

Scheme 501

Scheme 502

Scheme 503

Scheme 504

Scheme 505

Scheme 506

Scheme 507

Scheme 508

1. Install a new coolant separator (A) in the engine block whenever the engine block is replaced.
2. Clean the cylinder head and the engine block surface.
3. Install the new cylinder head gasket (A) and the dowel pins (B) on the engine block. Always use a new cylinder head gasket.
4. Set the crankshaft to top dead center (TDC). Align the TDC mark (A) on the crankshaft sprocket with the pointer (B) on the engine block.
5. Install the cylinder head on the engine block.
6. Measure the diameter of each cylinder head bolt at point A and point B.
7. If either diameter is less than 10.6 mm (0.417 in), replace the cylinder head bolt.
8. Apply new engine oil to the threads and under the bolt heads of all cylinder head bolts.
9. Torque the cylinder head bolts in sequence to 39 N.m (4.0 kgf.m, 29 lbf.ft). Use a beam-type torque wrench. When using a preset click-type torque wrench, be sure to tighten slowly and do not overtighten. If a bolt makes any noise while you are torquing it, loosen the bolt and retighten it from the first step.
10. After torquing, tighten all cylinder head bolts in two steps (90 ° per step) using the sequence shown in step 9 . If you are using a new cylinder head bolt, tighten the bolt an extra 90 °. NOTE: Remove the cylinder head bolt if you tightened it beyond the specified angle, and go back to step 6 of the procedure. Do not loosen it back to the specified angle.
11. Install the rocker arm assembly (see «ROCKER ARM ASSEMBLY INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl) ).
12. Install the cam chain (see «CAM CHAIN INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-4-cyl__cam-chain-installation) ).
13. Connect the following engine wire harness connectors, and install the wire harness clamps to the cylinder head: ECT sensor 1 connector CMP sensor A (Intake) connector CMP sensor B (Exhaust) connector Rocker arm oil control solenoid connector Rocker arm oil pressure switch connector EVAP canister purge valve connector VTC oil control solenoid valve connector Engine oil pressure switch connector
14. Install the connecting pipe mounting bolts (A) securing the connecting pipe (B).
15. Connect the water bypass hose (C).
16. Connect the upper radiator hose (A), the heater hoses (B), and the water bypass hose (C).
17. A/T model: Connect the water bypass hose (D).
18. Install the four bolts securing the EVAP canister purge valve bracket.
19. Connect the four fuel injector connectors (A), the engine mount control solenoid valve connector (B), and install the ground cables (C).
20. Connect the fuel feed hose (A), then install the quick-connect fitting cover (B) (see «FUEL LINE/QUICK-CONNECT FITTING INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-4-cyl__fuel-linequick-connect-fitting-installation) ).
21. Connect the EVAP canister hose (A).
22. Install the warm up TWC (see «WARM UP TWC REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/exhaust/#catalytic-converter-system-4-cyl__warm-up-twc-removalinstallation) ).
23. Install the intake manifold (see «INSTALLATION»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-4-cyl) ).
24. Install the drive belt (see «DRIVE BELT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/charging-system/#charging-system-4-cyl__drive-belt-removalinstallation) ).
25. Install the strut brace (see «STRUT BRACE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/exterior-body-panels/#frame-4-cyl) ).
26. After installation, check that all tubes, hoses, and connectors are installed correctly.
27. Inspect for fuel leaks. Turn the ignition switch to ON (II) (do not operate the starter) so the fuel pump runs for about 2 seconds and pressurizes the fuel line. Repeat this operation three times, then check for fuel leakage at any point in the fuel line.
28. Refill the radiator with engine coolant, and bleed the air from the cooling system (see «COOLANT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
29. Do the ECM/PCM idle lean procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-4-cyl__ecmpcm-idle-learn-procedure) ).
30. Do the CKP pattern clear/CKP pattern lean procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-4-cyl) ).
31. Inspect the idle speed (see «IDLE SPEED INSPECTION»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-4-cyl__idle-speed-inspection) ).
32. Inspect the ignition timing (see «IGNITION TIMING INSPECTION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-4-cyl) ).

Sealing Bolt Installation

Note. When installing the sealing bolt (A), always use a new washer (B).

Scheme 509

See also:
• GENERAL TROUBLESHOOTING INFORMATION
• DLC CIRCUIT TROUBLESHOOTING
• IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION
• ECM/PCM RESET
• ENGINE INSTALLATION
• DRIVE BELT REMOVAL/INSTALLATION
• ENGINE MOUNT REPLACEMENT
• VTC OIL CONTROL SOLENOID VALVE REMOVAL/TEST/INSTALLATION
• OIL PAN REMOVAL
• OIL PUMP CHAIN REPLACEMENT
• STRUT BRACE REPLACEMENT
• FUEL PRESSURE RELIEVING
• COOLANT REPLACEMENT
• REMOVAL
• WARM UP TWC REMOVAL/INSTALLATION
• FUEL LINE/QUICK-CONNECT FITTING REMOVAL
• CMP SENSOR B REPLACEMENT
• FUEL LINE/QUICK-CONNECT FITTING INSTALLATION
• ECM/PCM IDLE LEARN PROCEDURE
• IDLE SPEED INSPECTION
• CYLINDER HEAD COVER REMOVAL
• VALVE CLEARANCE ADJUSTMENT
• CAM CHAIN REMOVAL
• CAM CHAIN INSTALLATION
• CRANKSHAFT PULLEY REMOVAL AND INSTALLATION
• CAM CHAIN CASE OIL SEAL INSTALLATION
• CYLINDER HEAD REMOVAL
• CAMSHAFT INSPECTION
• ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY
• VALVE, SPRING, AND VALVE SEAL REMOVAL
• VALVE INSPECTION
• VALVE GUIDE REPLACEMENT