2004 s430 4matic noisy engine Help? on 2004 Mercedes-Benz S430 4MATIC

have A 2004 S430 4matic It has Noisy Engine Like Knock Sound Is That Common For This Car?

by in Staten Island, NY on February 09, 2011
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2 answers
ANSWER by , February 10, 2011
engine knocking is not common and almost always indicates something wrong. find an MB specialty repair shop ASAP.
ANSWER by , March 27, 2011
I had a MB430 and the same problem. I lucked out as it was just the serpentine belt tensioner taking a dive. Good Luck! Lance