Quote:
Originally Posted by Scharbag
Yes - warm engine and slowly rev up to 3K to 3.5K and then let it return to idle a few times.
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So this is the best way to "hear" rod knock?
I'm new to this motor and trying to determine what're the normal cold-start noises. My motor is dead smooth/quiet after the initial half second or so after a cold start. I get a quick metallic sound, sometimes, just after the motor fires.... lasts no more than half a second second. Then it's dead quiet there after. Sounds like timing chain or perhaps lifters.
This seems normal to me as most motors are a bit noisy at startup since oil isn't flowing to the lifters, etc. My S54 makes a good amount of racket at start up and so just trying to understand what's "normal", and what's indicative of a problem.
Sorry for thread jack but related.