Join Date: Aug 2000
Location: Batavia OH. USA
I have a tapping noise that seems to be coming from the pass. side valve cover area. It doesn't make this sound when the engine is cold. Only when it's at operating temp. It's Does NOT do it at idle or past 1800rpm's. It only makes this tapping sound at about 1200-1500 rpms. It has been making this sound since I got the car a year ago and its no worse or better. Any ideas? I just put a new set of headers, so I know it's not that. I have heard lifters tap before and I think they keep on tapping at higher rpms. Could it be a bent push rod or a rocker arm out of adjustment? Has anyone ever had this sound only at a 200 rpm range?