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- Possible Causes
- __ Poor lubrication (causes squeaking)
- __ Leaking or ruptured muffler
- __ Leaking around spark plug
- __ Leaking cylinder head gasket
- __ Loose joint between motor and
exhaust manifold
- __ Loose valve spring chamber cover
- __ Broken insulator on spark plug
- __ Broken piston rings (blowing sound)
- __ Tight piston rings (scraping sound)
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