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
2 answers
ANSWER by on February 10, 2011
engine knocking is not common and almost always indicates something wrong. find an MB specialty repair shop ASAP.
ANSWER by on 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
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