Ok so took the valve cover off, and still see oil puddle in the 3rd spark plug hole. Have to get power to my shop before i can get and use an impact. Want to break it down to the head and see if thats the problem. My issue with the knock is it happens only at a certain rpm, and doesnt stay all the time like other knocks ive heard. Could that just be spark plug knock, caused by the oil in the spark plug well?
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