I recently purchased a used BMW 1 Series and have noticed a strange rattling noise coming from the engine. It seems to happen more frequently when the car is idling, but can also occur while driving. What could be causing this noise and is there any way to fix it?
ReplyThe most common cause of rattling noises in the engine of a BMW 1 Series is a loose heat shield. This can be easily fixed by tightening the bolts or replacing the shield if it is damaged.
Another possible cause could be a worn tensioner or pulley in the drive belt system. These components should be checked and replaced if necessary to prevent any further damage to the engine.
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