can someone describe to me what a bad lifter sounds like? My car has the normal valvetrain noise but then on top of it when the car is idling i can hear a "hollow" tapping noise in the top of the motor. I have a custom grind comp cam with .591 lift on both sides, PRC gold duals, and 7.400" hardened pushrods. I dont think its a pushrod b/c i had those out not long ago when i installed the new springs and everything looked fine to me. Also about 6 months ago i found a small tight spring on my drain plug.
then i stumbled on a thread where a guy found the same looking spring along with needle bearings and it ended up being a lifter for him.
I haven't found needle bearings yet and i was thinking the spring was from some valve seals my old springs had chewed up. So i never thought about it again. But now this along with the "hollow" tapping noise i am hearing has me wondering.
I am going to start tearing down my daily driver this weekend to try and find the problem. But i dont want it to be down long since i need it for every day driving. So if anyone can tell me if they have had the same problem or can give me any advice please help me out. Thanks!