Thread: Engine "Knock"

Originally Posted by pbxcomm

I have noticed a knock coming from what appears to be the botton end of the motor, hard to tell exactly. The knock is not rythmic (it comes and goes only at idle). If I raised the RPM's the knock goes away.

Actually, this sounds exactly like a spun rod bearing (commonly referred to as a rod knock) in its beginning stages.

Take a video and post it.