Maxima SE V6-3.0L (VQ30DE) (1998)
Valve Clearance: Service and Repair
Valve Clearance
CHECKING
Check valve clearance while engine is cold and not running.
1. Remove intake manifold collector.
2. Remove rocker ornament covers.
3. Remove RH and LH rocker covers.
4. Remove all spark plugs.
5. Set No. 1 cylinder at TDC on its compression stroke.
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Align pointer with TDC mark on crankshaft pulley.
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Check that valve lifters on No. 1 cylinder are loose and valve lifters on No. 4 are tight.
If not, turn crankshaft one revolution (360°) and align as above.
6. Check only those valves shown in the figure.
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Using a feeler gauge, measure clearance between valve lifter and camshaft.
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Record any valve clearance measurements which are out of specification. They will be used later to determine the required replacement
adjusting shim.