Quote:
Originally Posted by nkaminar
Chris, I am sorry you are having so much problems. In my mind, the only thing that makes sense is a sticking lifter. Unfortunately fixing a sticking lifter will require some work. You will have to take the pan off and remove the cam. You can keep the lifters up with cloth pins. You will have to remove the valve keepers and springs.
How have you determined that the lifter "works fine"?
The only other thing that I can think of is to use a heaver valve spring on that valve. I assume you have checked the spring. You could take the heaver spring out after a few thousand miles. I have stretched springs to increase the spring force.
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I spoke to an engine rebuilder who told me to the check if the lifter comes up and down fine and turns in the bore. Sometimes what happens is when people remove the old lifters they can nick the hole.
Btw, I should mention that the valve guides and valves are modern and the lifters are the adjustable type.