Lifter Noise
2002 Disco 2 83K mi.
I think I have lifter noise.
Engine sounds fine when cold but when it warms up it taps at low rpm (at idle). Seems like it only taps when oil is warm and rpms are low both of which will naturally decrease the oil pressure. Then when reving from idle the tap gets a little louder and then at higer rpm the tap goes away. I recently rebuilt the heads. First time I started it after rebuilding the heads the engine was tapping like this but I put some lucas crap in there and a little sea foam in the oil. Then after letting the truck run for 10 mins the tapping went away. After about 400 miles of driving the tapping is back but not as loud. Im debating on what to do first?
--Change oil and filter (bought penzoil oil and cheap fram filter)
--Pull off valve covers and check for bad lifters or loose rocker arms(shouldnt be loose)
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