Mystery Engine Knock

[chrs1961815]

Before I took everything apart, I tried taking the cover off and spraying the stem with WD40 and also through the spark plug hole. I also sucked some MMO through the vacuum and in the gas. Didn't do anything.


So I took it apart yesterday and didn't find anything wrong with the valve itself, not bent. Nothing really on the stem of the valve. It fit perfectly in the valve guide with a little clearance on each side. I used some lapping compound on the stem and put it back together with lubricant.



Still have the sticky valve for whatever reason. I ordered some ball hones and I am going to take it back apart and hone a few thousandths off of the valve guide. At least that's the plan.