Would a jumped time on an AMC 360 (1982 vintage) cause the engine to knock? I have a mystery knock & I've tried everything I know before pulling the engine for an indepth investigation. I thought it was a collapsed lifter at first - starting like it was fighting compression, knock would come & go - so I replaced all the lifters & push rods. No change
The motor will run, it will knock for about the first 5 seconds & then stop - run fine till you gas it - knock starts again. The engine never looses oil pressure, it never even fluctuates and it never gets hot.
If it was a bottom end problem, I would think the problem would steadily get worse & oil pressure would start going away, especially when warm. It can sound really nasty, but has got me confused.