Engine noise

Asked by Feb 22, 2018 at 10:01 PM about the 2007 Mercedes-Benz M-Class 3.0TD ML320

Question type: Maintenance & Repair

I have popping/whistling sounds when engine
running from the top left hand side of engine around
the injectors also in the same are black oily carbon
deposits, any ideas

1 Answer


It could be several things – an injector, exhaust manifold gasket failing or some Merc 6 cylinder engines do have a problem with noise from cylinder number one. If you're worried I'd take it to a Mercedes specialist for full diagnosis.

Your answer:

Mercedes-Benz M-Class experts

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