Originally Posted by SafeChav
Originally Posted by tabetha
Tappets can knock if bad enough, as clearance between cam and follower/valve head bang together but must be really bad.
tabetha
How can a cam follower of such small size make a "knocking" noise similar to that of a worn bottom end.
i had a tappet not moving at all once, after i changed stem seals, the valve spring tool compressed the lifter and it didnt return itself, when i started it up that one tappet KNOCKED very loudly, i removed the rocker cover n removed that lifter and kept crushing the lifter back n fourth in a vice untill it free'd up again, put it back to together n it was silent again.