Quote:
Originally Posted by Helmut
We just purchased a previously owned 2000 ML320 Mercedes; I noticed that when the engine is cold in the morning, there is almost no knocking noise. Once the motor is warm, it almost sounds like a diesel motor. I was told this comes from the “lifter” my question, how serious is this problem, and two, how can this be fixed. Your advice is highly appreciated.
Helmut.
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Your engine is under a 10yr/150,000 mile warranty from Mercedes due to the FSS lawsuit, see
http://www.paed.uscourts.gov/documents/opinions/03D0139P.pdf for all the details. Also this information might be of some help
http://www.benzworld.org/forums/w163-m-class/1343510-engine-noise-after-4-day-shutdown.html 