Kolpin Powersports 180??, Service Manual

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47
FIG-18. Engine Disassembly
CYLINDER HEAD / VALVES
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.
Low compression valve
Incorrect valve adjustment.
Worn or damaged valve seats.
Burned or bent valve.
Incorrect valve timing.
Weak valve spring.
Cylinder head
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.
Worn or damaged rocker arm or camshaft.
Worn or damaged cam chain.
Worn or damaged cam chain tensioned.
Worn cam sprocket teeth.
Excessive smoke
Damaged valve stem seal.
Faulty cylinder or piston rings.