If your suspecting a collapsed lifter, an engine missifre would be present along with the check engine light majority of the time. Your oil pressure is at 80 ,I thought the gage went to 60 psi? Let me ask you this does the oil pressure gage stay pegged all the time at 60 or 80 or does it drop to around 20 or 30 psi when at a idle? The reason I ask is you might have a bad oil pressure sensor giving your a false reading, thus having lifter noise. How many miles are on this rig? Some noise is normal coming from the engine , depends on how loud it is to determine if a failure is present.
Last edited by chevy82; 11-20-2014 at 11:49 PM.