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Re: Engine knocking/clacking from 2013 Mercedes C250 1.8t
Posted to Technical Discussion Forum on 2/25/2021 1 Reply

Hello Jeff. I listened to the sound at idle multiple times and it sounds like a double knock which from what i remember from school could be a piston pin noise.

Not quite sure how to test for that on a MB. hope you get it solved. Login to read more.

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