GENERAL SPECIFICATIONS
| Item | Specification |
|---|---|
| Lubricants and Sealants | |
| SAE 5W-20 Premium Synthetic Blend Motor Oil XO-5W20-QSP | WSS-M2C153-H |
| Metal Surface Cleaner F4AZ-19A536-RA | WSE-M5B392-A |
| Silicone Gasket and Sealant F7AZ-19554-EA | WSE-M4G323-A4 |
| Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A221-A | ESE-M1C171-A |
| Engine | |
| Displacement | 3.0L (4V) (182 CID) |
| Number of cylinders | 6 |
| Bore | 89.0 mm (3.50 in) |
| Stroke | 79.5 mm (3.13 in) |
| Firing order | 1-4-2-5-3-6 |
| Oil pressure (minimum at 1,500 rpm with engine warmed up after 10 minutes of idling.) | 76kPa (11 psi) |
| Oil capacity (1) | 6.2 L (6.5 qts) |
| Compression ratio | |
| Cylinder Head and Valve Train | |
| Cylinder head distortion | (2) |
| Combustion chamber volume | 52 cc (3.17 CI) |
| Valve arrangement (front to rear) | LH intake I-I-I-I-I-I LH exhaust E-E-E-E-E-E RH intake I-I-I-I-I-I RH exhaust E-E-E-E-E-E |
| Valve guide bore diameter | 6.015-6.044 mm (0.236-0.237 in) |
| Valve stem diameter - intake | 5.975--5.995 mm (0.2350--0.2358 in) |
| Valve stem diameter - exhaust | 5.950--5.970 mm (0.2343--0.2350 in) |
| Valve stem-to-guide clearance - intake | 0.019--0.069 mm (0.0007--0.0027 in) |
| Valve stem-to-guide clearance - exhaust | 0.045--0.094 mm (0.0017--0.037 in) |
| Valve head diameter - intake | 35 mm (1.38 in) |
| Valve head diameter - exhaust | 30 mm (1.18 in) |
| Valve head diameter (intake) - gauge diameter | 33.5 mm (1.3189 in) |
| Valve head diameter (exhaust) - gauge diameter | 28.0 mm (1.10236 in) |
| Valve face runout | 0.05 mm (0.001 in) |
| Valve face angle | 45.5 degrees |
| Valve seat width - intake | 1.1-1.4 mm (0.043-0.055 in) |
| Valve seat width - exhaust | 1.4-1.7 mm (0.055-0.066 in) |
| Valve seat runout | 0.04 mm (0.001 in) |
| Valve seat angle | 44.75 degrees |
| Valve spring free length (approx.) | 46.6 mm (1.84 in) |
| Valve spring squareness | 2.5% |
| Valve spring compression pressure (N @ spec, length) | 693 N @ 30.09 mm (156 lbs @ 1.18 in) |
| Valve spring installed height (N @ spec, length) | 39.89 mm (1.57 in) |
| Valve spring installed pressure | 240 N @ 39.89 mm (53.95 lbs @ 1.57 in) |
| Valve spring installed pressure - service limit | 10% force loss @ specified height |
| Roller follower ratio @ max. lift | 2.0:1 |
| Hydraulic Lash Adjuster | |
| Diameter (standard) | 16-15.988 mm (0.6290-0.6294 in) |
| Clearance-to-bore | 0.018--0.069 mm (0.0007--0.0027 in) |
| Hydraulic leakdown rate | 5--25 seconds |
| Collapsed lash adjuster gap | 0.50--1.11 mm (0.019--0.043 in) |
| Camshaft | |
| Theoretical valve lift @ 0 lash | 9.80 mm (0.388 in) |
| Lobe lift | 4.80 mm (0.189 in) |
| Allowable lobe lift loss | 0.76 mm (0.003 in) |
| Journal diameter (all) | 26.962--26.936 mm (1.061--1.060 in) |
| Camshaft journal bore inside diameter | 27.012-26.987 mm (1.063-1.062 in) |
| Camshaft journal-to-bearing clearance - standard | 0.025--0.076 mm (0.001--0.0029 in) |
| Camshaft journal-to-bearing clearance - service limit | 0.121 mm (0.0047 in) |
| Runout | |
| End play - service limit | 0.190 mm (0.00748 in) |
| Cylinder Block | |
| Cylinder bore diameter - grade 1 | 89.000--89.010 mm (3.50393--3.504323 in) |
| Cylinder bore diameter - grade 2 | 89.010--89.020 mm (3.504323--3.504717 in) |
| Cylinder bore diameter - grade 3 | 89.020-82.030 mm (3.504717-3.50511 in) |
| Cylinder bore maximum taper | 0.020 mm (0.008 in) |
| Cylinder bore maximum out-of-round | 0.015 mm (0.0005 in) |
| Cylinder bore maximum out-of-round - service limit | 0.020 mm (0.0007 in) |
| Main bearing bore inside diameter | 67.998--68.022 mm (2.677--2.6780 in) |
| Head gasket surface flatness | |
| Crankshaft | |
| Main bearing journal diameter | 62.968--62.992 mm (2.479--2.480 in) |
| Main bearing journal maximum taper | 0.008 mm (0.0003 in) |
| Main bearing journal maximum out-of-round | 0.006 mm (0.0082 in) |
| Main bearing journal-to-cylinder block clearance | 0.024--0.072 mm (0.0009--0.003 in) |
| Connecting rod journal diameter | 49.969--49.991 mm (1.967--1.968 in) |
| Connecting rod journal maximum taper | 0.008 mm (0.0003 in) |
| Connecting rod journal maximum out-of-round | 0.006 mm (0.0002 in) |
| Crankshaft maximum end play | 0.135-0.255 mm (.005-.010 in) |
| Piston and Connecting Rod | |
| Piston diameter - coated, grade 1 | 88.990--89.010 mm (3.5035--3.5043 in) |
| Piston diameter - coated, grade 2 | 88.998--89.022 mm (3.5039--3.5048 in) |
| Piston diameter - coated, grade 3 | 89.010--89.030 mm (3.5043--3.5051 in) |
| Piston diameter - uncoated, grade 1 | 88.970--88.980 mm (3.50275--3.50314 in) |
| Piston diameter - uncoated, grade 2 | 88.978--88.992 mm (3.50306--3.50362 in) |
| Piston diameter - uncoated, grade 3 | 89.010--89.030 mm (3.50432--3.50511 in) |
| Piston-to-cylinder bore clearance | 0.012 to 0.022 mm (0.0005--0.0009 in) |
| Piston ring end gap - compression (top, gauge diameter) (3) | 0.100--0.250 mm (0.0039--0.0098 in) |
| Piston ring end gap - compression (bottom, gauge diameter) | 0.27--0.42 mm (0.0106--0.0165 in) |
| Piston ring end gap - oil ring (steel rail, gauge diameter) | 0.15--0.65 mm (0.0059--0.0255 in) |
| Piston ring end gap - compression (top, service limit) | 0.50 mm max (0.0196 in) |
| Piston ring end gap - compression (bottom, service limit) | 0.65 mm max (0.0255 in) |
| Piston ring end gap - oil ring (steel rail, service limit) | 0.90 mm max (0.0354 in) |
| Piston ring groove width - compression (top) | 1.230--1.245 mm (0.0484--0.0490 in) |
| Piston ring groove width - compression (bottom) | 1.530--1.545 mm (0.0602--0.0608 in) |
| Piston ring groove width -- oil ring | 3.030--3.055 mm (0.1192--0.1203 in) |
| Piston ring width | |
| Piston ring-to-groove clearance | |
| Piston pin bore diameter | 21.008--21.012 mm (0.8270--0.8272 in) |
| Piston pin diameter | 21.011--21.013 mm (0.8271--0.8273 in) |
| Piston pin length | 60.51-60.08 mm (2.382-2.365 in) |
| Piston pin-to-piston fit | 0.002 to 0.009 mm (0.00007-0.00003 in) |
| Piston-to-connecting rod clearance | |
| Connecting rod-to-pin clearance - standard | 0.004-0.02 mm (0.0001-0.0007 in) |
| Connecting rod-to-pin clearance - service limit | 0.035 mm (0.0013 in) |
| Connecting rod pin bore diameter | 21.017--21.031 mm (0.827--0.828 in) |
| Connecting rod length (center-to-center) | 138.06--138.14 mm (5.435--5.438 in) |
| Connecting rod maximum allowed bend | 0.038 mm per 25 (0.0014 per 0.984 in) |
| Connecting rod maximum allowed twist | 0.050 mm per 25 (0.0019 per 0.984 in) |
| Connecting rod bearing bore diameter | 53.015--53.035 mm (2.0872--2.0879 in) |
| Connecting rod bearing-to-crankshaft clearance | 0.028--0.066 mm (0.001--0.0025 in) |
| Connecting rod side clearance | 0.100-0.30 mm (0.0039--0.0118 in) |
| (1) With filter change. (2) Refer to the procedure for specifications. (3) Specification 82.4 mm (3.2441 in) diameter gauge. | |
| (1) | With filter change. |
| (2) | Refer to the procedure for specifications. |
| (3) | Specification 82.4 mm (3.2441 in) diameter gauge. |
GENERAL SPECIFICATIONS
TORQUE SPECIFICATIONS
| Description | Nm | Lb-ft | Lb-in |
|---|---|---|---|
| A/C compressor bolts | 25 | 18 | |
| A/C compressor bracket bolts (1) | |||
| A/C line nut | 8 | 71 | |
| A/C-to-coolant pump bracket bolts | 25 | 18 | |
| Accessory drive belt tensioner bolt | 25 | 18 | |
| Camshaft cap bolts | 10 | 89 | |
| Camshaft position (CMP) sensor bolt | 10 | 89 | |
| Camshaft oil seal retainer | 10 | 89 | |
| Crankcase cover bolts | 10 | 89 | |
| Crankshaft damper bolt (1) | |||
| Crankshaft position sensor (CKP) bolt | 10 | 89 | |
| Crankshaft pulley (1) | |||
| Crankshaft pulley bracket nuts | 25 | 18 | |
| Cylinder head bolts (1) | |||
| Exhaust gas recirculation (EGR) tube nuts | 40 | 30 | |
| EGR valve bolts | 25 | 18 | |
| EGR valve nuts | 10 | 89 | |
| Engine front cover bolts and studs (1) | |||
| Engine cooling fan | 10 | 89 | |
| Engine mount bolts | 90 | 66 | |
| Engine roll restrictor bolts | 40 | 30 | |
| Engine roll restrictor bracket bolts | 63 | 46 | |
| EGR vacuum regulator tube nuts | 6 | 53 | |
| Exhaust bracket nut | 40 | 30 | |
| Flexplate bolts | 80 | 59 | |
| Ball joint nuts | 80 | 59 | |
| Front splash shield bolts | 7 | 62 | |
| Fuel charging harness nut | 3 | 27 | |
| Fuel supply manifold bolts | 10 | 89 | |
| Generator bolts and studs | 25 | 18 | |
| Ground strap bolt | 15 | 11 | |
| Halfshaft-to-wheel hub nuts | 258 | 191 | |
| Heater hose bracket nuts | 10 | 89 | |
| Ignition coil-on-plug bolts | 6 | 53 | |
| Knock sensor (KS) bolt | 18 | 13 | |
| LH engine support insulator bolts | 70 | 52 | |
| LH engine support insulator nut | 90 | 66 | |
| LH exhaust manifold nuts | 20 | 15 | |
| Lower cylinder block bolts and studs (1) | |||
| Lower intake manifold bolts | 10 | 89 | |
| Oil filter | 16 | 12 | |
| Oil level indicator and tube stud | 10 | 89 | |
| Oil pan baffle nuts (1) | |||
| Oil pan bolts and studs | 25 | 18 | |
| Oil pan drain plug | 27 | 20 | |
| Oil pan-to-transaxle bolts | 40 | 30 | |
| Oil pressure sensor | 14 | 10 | |
| Oil pump bolts | 10 | 89 | |
| Oil pump screen and pick up tube bolts (1) | |||
| Outer tie rod end nuts | 55 | 41 | |
| Power steering pump bolts | 25 | 18 | |
| Power steering pressure line bracket nut | 10 | 89 | |
| Power steering pressure line nut | 37 | 27 | |
| Powertrain control module (PCM) electrical connector bolt | 6 | 53 | |
| Radiator support bracket bolt | 10 | 89 | |
| RH engine support insulator nut | 90 | 66 | |
| RH engine support insulator through bolt and nut | 62 | 46 | |
| RH exhaust manifold nuts | 20 | 15 | |
| RH radio ignition interference capacitor nut | 6 | 53 | |
| Shifter cable nut | 17 | 13 | |
| Spark plugs | 15 | 11 | |
| Starter motor ground cable bolt | 25 | 18 | |
| Starter cable positive nut | 12 | 9 | |
| Steering shaft pinch bolt | 24 | 18 | |
| Subframe bolts | 103 | 76 | |
| Sway bar end link nuts | 55 | 41 | |
| Throttle body bolt and stud | 10 | 89 | |
| Timing chain guide bolts | 25 | 18 | |
| Timing chain tensioner bolts | 25 | 18 | |
| Torque converter-to-flexplate nuts | 37 | 27 | |
| Transaxle-to-oil pan bracket bolt | 25 | 18 | |
| Transaxle-to-oil pan bracket nuts | 10 | 89 | |
| Upper intake manifold bolts | 10 | 89 | |
| Valve cover bolts and studs | 10 | 89 | |
| Wire harness nut | 3 | 27 | |
| Y-pipe nuts | 40 | 30 | |
| Y-pipe-to-exhaust manifold nuts | 40 | 30 | |
| (1) Multiple step sequence. Refer to procedure. | |||
| (1) | Multiple step sequence. Refer to procedure. |
TORQUE SPECIFICATIONS
The 3.0L Duratec is a four-valve-per-cylinder, dual overhead camshaft engine. The engine uses a distributorless ignition system. The cylinder block is a two-piece design with the upper portion housing the cylinders, and a separate lower cylinder block containing the main bearing caps. Both sections are made of aluminum, with inserts for the bearing areas and caps. An aluminum oil pan bolts to the bottom of the lower cylinder block and to the transaxle to provide greater strength.
The camshafts are mounted in the cylinder heads and act against a roller follower to open and close the valves. A hydraulic lash adjuster is located on one side of the roller follower and the valve tip on the opposite end. The camshafts are driven off the front of each cylinder head by two chains (one each side). Both of the chains are driven by sprockets that are located on the crankshaft, just in front of the oil pump.
| WARNING | The 3.0L Duratec engine is equipped with a composite intake manifold and fabricated exhaust manifolds. The engine should not be supported by these manifolds during repair procedures. Failure to follow these instructions can result in personal injury. |
Scheme 329
Scheme 330
Scheme 331
Scheme 332
Refer to ENGINE SYSTEM-GENERAL INFORMATION for basic mechanical concerns.
See INTRODUCTION - GASOLINE for driveability concerns.
Scheme 333
Scheme 334
Scheme 335
Scheme 336
Scheme 337
Scheme 338
Scheme 339
Scheme 340
Scheme 341
Scheme 342
Scheme 343
- Remove the air cleaner outlet pipe. For additional information, refer to «INTAKE AIR DISTRIBUTION & FILTERING»(ref-233699) .
- Remove the pin-type retainers and the accelerator cable splash shield.
- Disconnect the accelerator cable, the cruise control cable and the throttle return spring.
- Remove the bolts and position the bracket and cables aside.
- Disconnect the throttle position (TP) sensor and the idle air control (IAC) valve electrical connectors. Detach the harness retainer from the throttle body stud bolt.
- Disconnect the heated throttle body coolant tubes.
- Disconnect the positive crankcase ventilation (PCV) hose.
- Disconnect the vacuum supply hose.
- Disconnect the brake booster and evaporative emissions (EVAP) vacuum hoses.
- Remove the exhaust gas recirculation (EGR) valve. Disconnect the vacuum hose. Remove the nuts. Remove the bolts. Remove the EGR valve.
- Remove the EGR vacuum regulator (EVR) valve. Disconnect the vacuum hose. Disconnect the electrical connector. Remove the bolts. Remove the valve.
- Remove the eight bolts and the upper intake manifold. Remove and discard the gaskets. Clean all mating surfaces.
Scheme 344
Scheme 345
Scheme 346
Scheme 347
- Position new gaskets in the upper intake manifold.
- Position the upper intake manifold and install the bolts in the sequence shown.
- Install the EGR vacuum regulator valve. Position the valve. Install the bolts. Connect the electrical connector. Connect the vacuum hose.
- Install the EGR valve. Position the EGR. Install the bolts. Install the nuts Connect the vacuum hose.
- Connect the brake booster and PCV vacuum hoses.
- Connect the vacuum supply hose.
- Connect the PCV valve hose.
- Connect the TP and I AC valve electrical connectors. Attach the harness retainer to the throttle body stud bolt.
- Connect the heated throttle body coolant tubes.
- Position the bracket and cables and install the bolts.
- Connect the throttle return spring, accelerator cable and the cruise control cable.
- Install the pin-type retainers and the accelerator cable splash shield.
- Install the air cleaner outlet pipe. For additional information, refer to «INTAKE AIR DISTRIBUTION & FILTERING»(ref-233699) .
Scheme 348
Scheme 349
Scheme 350
- Release the fuel system pressure. For additional information, refer to «FUEL SYSTEM-GENERAL INFORMATION»(ref-233735) .
- Disconnect the fuel hose quick release coupling from the fuel supply manifold. For additional information, refer to «FUEL SYSTEM-GENERAL INFORMATION»(ref-233735) .
- Remove the upper intake manifold. For additional information, refer to «UPPER INTAKE MANIFOLD»(ref-233692-S35322932072006052600000) .
- Disconnect the fuel injection pressure and temperature sensor vacuum tube and the electrical connector.
- Disconnect the fuel injector electrical connectors.
- Remove the bolts in sequence shown, and remove the lower intake manifold.
- Remove and discard the gaskets from the lower intake manifold.
See also:
• AUTOMATIC TRANSAXLE/TRANSMISSION - 4F50N