This engine noise on our 2009 35d w/83K miles has been getting louder. Given its age I decided to start by replacing wear items. So I’ve ordered new belts, idler and belt tensioner which should be here by next weekend. But I’m getting concerned that this might more serious e.g. alternator bearings, water pump, etc.
35d Engine Noise.wmv
Is this sound familiar?
Funf Dreisig