I recently purchased a 92 stealth r/t with what sounds like a noisy valve or lifter. I started to tear it down and got the covers off, the timing belt and water pump out because I wanted to replace those parts anyway but have yet to find anything that would make the noise. The lash adjusters are all tight and rocker arms and cam look OK. Everything looks in order. The compression is all at about 150, the plugs were burning fine. The noise does not show up when the engine is cranked, only when it is running. It is a loud ticking sound in the beat like one of the valves but I could not pinpoint it while it was running. The car has 110,000 miles but everything looks good. Do you have any idea's?