Pathfinder 2WD V6-4.0L (VQ40DE) (2009)
Valve Clearance: Service and Repair
CAMSHAFT VALVE CLEARANCE
Valve Clearance
INSPECTION
NOTE:
Perform the following inspection after removal, installation or replacement of camshaft or valve-related parts, or if there are unusual engine conditions
due to changes in valve clearance over time (starting, idling, and/or noise).
1. Remove the engine room cover. Refer to See: Engine, Cooling and Exhaust/Engine/Service and Repair/Removal and Replacement/Engine Cover.
2. Remove the air cleaner and air duct assembly. Refer to See: Air Cleaner Housing/Service and Repair/Exploded View.
3. Remove rocker covers (RH and LH banks). Refer to See: Engine, Cooling and Exhaust/Engine/Cylinder Head Assembly/Valve Cover/Service and
Repair/Removal And Installation.
4. Measure the valve clearance as follows:
a. Set No. 1 cylinder at TDC of its compression stroke.
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Rotate crankshaft pulley clockwise to align timing mark (A) (grooved line without color) with timing indicator (B).
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Make sure that intake and exhaust cam noses on No. 1 cylinder (engine front side of RH bank) are located as shown.
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If not, rotate crankshaft one revolution (360°) and align as shown.
b. Use feeler gauge, measure the clearance between valve lifter and camshaft.