Originally posted by joe p
take the belt off and see if the noise goes away, you might have a bad belt damper bushing.
I see that this problem is posted a time ago, but I have the same problem, I own a c220D '96 and nobody can tell me were the noise is coming from. The noise isn't from the belt at the front of the engine. Can somebody tell me were the noise is coming from??
The car drives well and the engine temprature is good, normal oil-usage etc.
Is it the fuelpump?