I have noticed that my BMW 3 Series engine is making a knocking noise when idling. It doesn't seem to affect performance, but I'm worried it could be a sign of a bigger issue. What could be causing this and how can I fix it?
ReplyThe knocking noise could be caused by a variety of issues, such as worn engine bearings or a faulty fuel injector. It is important to have it checked and repaired by a certified mechanic to prevent further damage to your engine.
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