Strange Engine Issue - Video here (CL63)
I have been experiencing this strange noise issue for about a year now, sometimes it happens few times a day, sometimes once a week. Mostly happens during a cold engine start after a night in garage, but on a few occasions it happened during a day as well.
I have taken my car to the dealership, they have replaced all the pulleys including the belt, also the ABC Pump I have is new (replaced last summer). They don't really know where it is coming from.
The noise decreases with increasing revs.
Anyone any idea? Any help would be greatly appreciated.

Part 1:
Part 2:
Anyways, what's IMPORTANT:
If the noise goes away in first 5 minutes of driving/idle, we are okay. If it stays, than there is problem.
Noise is same on mine, as well as same like here:
https://mbworld.org/forums/w211-amg/...ter-noise.html
http://www.benzworld.org/forums/w211...ine-noise.html
Last edited by GMBALL; Oct 11, 2016 at 08:05 AM.
Mike
Mike
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