Hi there,
A faulty lifter will tick, but if you are developing a bearing problem this will knock, it will be a deep and hollow sounding knock and it will be constant with engine speed, I would get a mechanic to listen to it ASAP as if it is a bearing problem you run the chance of destroying the engine if you let it go on for to long.
Mark (mhpautos)
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Monday, December 29th, 2008 AT 1:41 AM