Sentra L4-1597cc 1.6L DOHC MFI (GA16DE) (1991)
6. Check only those valves shown in the image.
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Use the same procedure as mentioned in step 4.
7. If all valve clearances are within specification, install the following parts:
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Rocker cover
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All spark plugs
Adjusting
Adjust valve clearance while engine is cold.
1. Turn crankshaft. Position cam lobe upward on camshaft for valve that must be adjusted.
2. Place Tool (A) around camshaft as shown in image.
Before placing Tool (A), rotate notch toward center of cylinder head. (See image.) This will simplify shim removal later.
CAUTION:
Be careful not to damage cam surface with Tool (A).
3. Rotate Tool (A) so that valve lifter is pushed down.