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Originally Posted by cpatstone  I think it was ivoryplayer who needed and found a new motor. I haven't quite given up on mine yet. M44s don't have vanos. I couldn't find anything wrong under the valve cover... so I'm still at a loss. ??? |
Guess I should read the screen names instead of skimming during my study break
I'm going to x3 the valve train. I wanted to say it was a piston-valve contact, but it sounded so smooth I doubted that. My first guess now, though, would definitely be a either sticky or dead lifter like John said. Just watched my old videos of a sticky lifter though, and it was present at all RPM's, easily distinguishable at idle
GL with the diagnostic, I'd say pulling the valve cover and taking a closer look is going to be the next step.