Quote:
Originally Posted by Doc Oc
Hmm that's interesting. Something in the lm could be causing the lifter to stick and the sound we hear is the cam popping it back down. That would explain why the noise doesn't have a real pattern. I was just fiddling with the lifters in a spare set of heads I have and it doesn't take much to make them stick. If you flick the top of the lifter and send it back down the clack it makes is very similar. Seems like a viable explanation!
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Gunk, oil residue?
Yet another reason to avoid extended OCIs