Altima 2.5 SL L4-2.5L (QR25DE) (2002)
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Use a feeler gauge, measure clearance between valve and camshaft.
Valve clearance standard:
Hot
Intake: 0.32 - 0.40 mm (0.013 - 0.016 inch)
Exhaust: 0.33 - 0.41 mm (0.013 - 0.016 inch)
Cold*
Intake: 0.24 - 0.32 mm (0.009 - 0.013 inch)
Exhaust: 0.26 - 0.34 mm (0.010 - 0.013 inch)
* Reference data at approximately 20°C (68°F)
CAUTION: If inspection was carried out with cold engine, check that values with fully warmed up engine are still within specifications.
7. Turn crankshaft one complete revolution (360°) and align mark on crankshaft pulley with pointer.
8. By referring to the figure, measure valve clearances at locations marked X as shown in the table below (locations indicated with black arrow in
figure above).
Table
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No.4 cylinder compression TDC.
9. If out of specifications, adjust. Refer to Cylinder Head Assembly; Valve Clearance; Adjustments.