4.2 TROUBLE SHOOTING
Engine top-end problems usually affect engine performance. These problems can be diagnosed by a
compression test, or by tracing engine noise to the top end with a sounding rod or stethoscope.
Valve
•
Incorrect valve adjustment
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Worn or damaged valve seats
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Burned or bent valve
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Incorrect valve timing
•
Weak valve spring
Cylinder head
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Leaking or damaged head gasket
•
Warped or cracked cylinder head
•
Faulty cylinder or piston
Excessive noise
•
Incorrect valve adjustment
•
Sticking valve or broken valve spring
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Worn or damaged rocker arm or camshaft
•
Worn or damaged cam chain
•
Worn or damaged cam chain tensioner
•
Worn cam sprocket teeth
Excessive smoke
•
Damaged val ve stem seal
•
Faulty cylinder or piston rings
4.3 CAMSHAFT COMPOSITION REMOVAL
Remove the rubber tube of gas waste recovery.
Remove the cylinder head cover.
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