Engine Controls - Adjustments: Other Honda Civic V

ENGINE COMPRESSION

Check compression pressure with engine at normal operating temperature, all spark plugs removed, throttle valves wide open and at specified cranking speed. Crank engine at least 6 revolutions to determine engine compression. Compression reading should be as specified in ENGINE COMPRESSION table.

ENGINE COMPRESSION (1)

Scheme 1

Scheme 2

1. With engine cold, remove valve cover, spark plugs and distributor cap. Adjustment of exhaust and intake valves are done at same time.
2. Rotate crankshaft to bring No. 1 piston to TDC on compression stroke. UP marks on camshaft pulleys should be at top and TDC grooves on camshaft pulleys should align with cylinder head surface. (Scheme 1) Distributor rotor should point to No. 1 spark plug wire on cap.
3. Loosen lock nuts on valves for No. 1 cylinder, and adjust valve clearances to specification. (Scheme 2) See «VALVE CLEARANCE ADJUSTMENT SPECIFICATIONS»(ref-15654-S22168067972001010800000) table. Tighten lock nuts to specification. See «TORQUE SPECIFICATIONS»(ref-15654-S14053073492001010800000) table at end of article. Recheck valve clearance.
4. Rotate crankshaft until next cylinder is at TDC. For remaining cylinders, repeat steps 3) and 4).
5. Replace valve cover and distributor cap. Tighten nuts and bolts to specification. See «TORQUE SPECIFICATIONS»(ref-15654-S14053073492001010800000) table. VALVE CLEARANCE ADJUSTMENT SPECIFICATIONS Model Intake - In. (mm) Exhaust - In. (mm) Accord.009-.011 (.23-.28).011-.013 (.28-.32) Civic.007-.009 (.17-.23).009-.011 (.23-.28) CRX 1.5L PFI.005-.007 (.13-.17).007-.009 (.17-.23) CRX 1.5L TBI & 1.6L PFI.007-.009 (.17-.23).009-.011 (.23-.28) Prelude.003-.005 (.08-.13).006-.008 (.16-.20)

Scheme 3

Scheme 4

1. With engine cold, remove valve cover, spark plugs and distributor cap. Adjustment of exhaust and intake valves are done at same time.
2. Rotate crankshaft to bring No. 1 piston to TDC on compression stroke. UP mark on camshaft pulley should be at top and TDC grooves on camshaft pulley should align with cylinder head surface. (Scheme 3) Distributor rotor should point to No. 1 spark plug wire on distributor cap.
3. Loosen lock nuts on valves for No. 1 cylinder, and adjust valve clearances to specification. See «VALVE CLEARANCE ADJUSTMENT SPECIFICATIONS»(ref-15654-S22168067972001010800000) table. (Scheme 4) Tighten lock nuts to specification. See «TORQUE SPECIFICATIONS»(ref-15654-S14053073492001010800000) table at end of article. Recheck valve clearance, and repeat adjustment if necessary.
4. Rotate crankshaft until next cylinder is at TDC. Repeat step 3). Repeat steps 3) and 4) for remaining cylinders.
5. Replace valve cover and distributor cap. Tighten nuts and bolts to specification. See «TORQUE SPECIFICATIONS»(ref-15654-S14053073492001010800000) table.

Scheme 5

Scheme 6

1. Remove rubber cap from inspection window on bellhousing of cylinder block. Start and warm engine to normal operating temperature (cooling fan comes on). Connect a jumper wire between Orange/Red and Green/White wire terminals of ignition timing check connector located in passenger-side kick panel. (Scheme 5)
2. Connect a timing light to No. 1 spark plug wire. Check base ignition timing with timing light. See «IGNITION TIMING»(ref-15654-S41237282822001010800000) table. TDC mark is on flywheel for manual transmissions and on drive plate for automatic transmissions. (Scheme 6)
3. Loosen hold-down bolts, and rotate distributor to adjust timing. Tighten distributor hold-down bolts to specification after adjustment. See «TORQUE SPECIFICATIONS»(ref-15654-S14053073492001010800000) table at end of article. Recheck timing.
4. Remove timing light. Remove jumper wire from ignition timing check connector. Install rubber cap to inspection window. IGNITION TIMING (Degrees BTDC@RPM) Application Setting Accord 13-17@700-800 Civic 16-20@700-800 CRX 1.5L PFI (1) 12-16@550-650 1.5L TBI 16-20@675-775 1.6L PFI 16-20@700-800 Prelude 13-17@700-800 (1) 600-700 RPM on California vehicles.

Scheme 7

Scheme 8

1. To view timing marks on Prelude, remove rubber cap from inspection window on cylinder block by bellhousing. On Civic and CRX, timing marks are on timing belt cover and crankshaft pulley. Start and warm engine to normal operating temperature (cooling fan comes on). Connect timing light.
2. Remove Yellow rubber cap from ignition timing check connector, located under dash on Civic and CRX or behind ignition coil on Prelude. Connect jumper wire between Brown and Green/White wire terminal connectors. (Scheme 7)or (Scheme 8).
3. Check ignition timing, and adjust to specification if necessary. See «IGNITION TIMING»(ref-15654-S41237282822001010800000) table. To adjust, loosen distributor hold-down bolts and turn distributor housing counterclockwise to advance or clockwise to retard timing.
4. Tighten distributor hold-down bolts to specification after adjustment. See «TORQUE SPECIFICATIONS»(ref-15654-S14053073492001010800000) table at end of article. Recheck timing. Remove jumper wire from ignition timing check connector. Replace rubber cap in inspection window on Prelude.

IDLE MIXTURE

Note. Idle mixture is computer-controlled and is not adjustable. Maximum CO level is .1% on all models.

Scheme 9

1. Start and warm engine to normal operating temperature (cooling fan comes on). Connect tachometer. Disconnect 2-wire Electronic Air Control Valve (EACV) connector. Ensure all accessories and cooling fan are off. Check idle speed. See «IDLE SPEED SPECIFICATIONS»(ref-15654-S08466643212001010800000) table.
2. If necessary, adjust idle speed by turning idle adjusting screw. (Scheme 9) Turn ignition off. Reconnect 2-wire EACV connector. Remove BACK-UP fuse from underhood relay box for 10 seconds to reset ECU. Restart engine. Check idle speed with all accessories off. See «IDLE SPEED SPECIFICATIONS»(ref-15654-S08466643212001010800000) table.
3. Idle engine for one minute with various accessories on and check idle speed. See «IDLE SPEED SPECIFICATIONS»(ref-15654-S08466643212001010800000) table. Idle speed should be stable and within specification. If idle is not within specification, see «TESTS W/O CODES»(ref-15660) article in the ENGINE PERFORMANCE Section. IDLE SPEED SPECIFICATIONS (1) Application RPM Accord All Models 550-650 After ECU Reset No Load 700-800 Under Load 720-820 Civic 1.5L 575-675 1.6L 500-600 After ECU Reset 1.5L No Load 700-800 Under Load 760-860 1.6L No Load 700-800 Under Load 2WD 760-860 4WD Manual 760-860 Automatic 780-880 CRX 1.5L PFI 450-550 1.5L TBI 575-675 1.6L PFI 500-600 After ECU Reset 1.5L PFI No Load California 600-700 Federal 550-650 Under Load 700-800 1.5L TBI & 1.6L PFI No Load 700-800 Under Load 760-860 Prelude All Models 600-700 After ECU Reset 720-820 (1) Idle speed is set with headlights and cooling fan off and automatic transmission in Drive.

Scheme 10

Scheme 11

1. Start and warm engine to normal operating temperature (cooling fan comes on). Connect tachometer. Disconnect 2-wire Electronic Air Control Valve (EACV) connector. Ensure all accessories and cooling fan are off. Check idle speed. See «IDLE SPEED SPECIFICATIONS»(ref-15654-S08466643212001010800000) table.
2. Adjust idle speed, if necessary, by turning idle adjusting screw. (Scheme 10)or (Scheme 11). If idle speed is excessively high, check dashpot or throttle cable. Turn ignition off. Reconnect 2-wire EACV connector.
3. Remove HAZARD fuse from main fuse box for 10 seconds to reset ECU. Restart engine. Check idle speed with various accessories turned on. Idle speed should be stable and within specification. See «IDLE SPEED SPECIFICATIONS»(ref-15654-S08466643212001010800000) table. If idle is not within specification, see «TESTS W/O CODES»(ref-15660) article in the ENGINE PERFORMANCE Section.

Scheme 12

1. Start and warm engine to normal operating temperature (cooling fan comes on). Connect tachometer to engine. Disconnect 2-wire EACV connector. Ensure steering wheel is in straight-ahead position and all accessories and cooling fan are off. Check idle speed. See «IDLE SPEED SPECIFICATIONS»(ref-15654-S08466643212001010800000) table.
2. If necessary, adjust idle speed by turning idle adjusting screw. (Scheme 12) Reconnect 2-wire EACV connector. Turn ignition off. Remove CLOCK fuse from underhood relay box for 10 seconds to reset ECU.
3. Restart engine. Check idle speed while turning steering wheel with headlights in high beam, all accessories on and automatic transmission in gear. Idle should remain stable at specified RPM. See «IDLE SPEED SPECIFICATIONS»(ref-15654-S08466643212001010800000) table. If idle speed is not as specified, see «TESTS W/O CODES»(ref-15660) article in the ENGINE PERFORMANCE Section.

THROTTLE ANGLE (POSITION) SENSOR

Note. For testing procedures, refer to appropriate TESTS W/CODES or SYSTEM/COMPONENT TESTS article in the ENGINE PERFORMANCE Section.

THROTTLE ANGLE (POSITION) SENSOR SPECIFICATIONS