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Why is my BMW Z4 engine making a rattling noise?

I noticed my BMW Z4 engine started making a strange rattling noise. Any idea what could be causing this?

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Answers (2)

M

The most likely cause of a rattling noise coming from your engine is a loose or worn out timing chain. Check the tension of the timing chain and replace it if necessary.

E

Another possible cause could be a problem with the fuel injectors. Have them inspected and cleaned or replaced if needed.

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