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Posted

Sounds like you have a good amount of oil leaking into your cylinder. Most likely worn piston/rings or valve guides/seals. Could also be a blown gasket or o-ring letting the oil that flows up to the head into the cylinder. Make sure you have not overfilled the engine oil. If the oil level is ok, then it sounds like you need to start taking the motor apart. I would strongly recommend buying a repair manual.

Posted

Too much oil would not cause the motor to knock, not enough oil would though. Any time you tear into the motor, there is a certain degree of difficulty, how hard is really a matter of how good you are at working on things.

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