This 640d came in with strange vibration ,it was very bad and very slight rattle in the engine . Rattle sound , stretched timing chain noise , and vibration , later was found ,was caused by worn engine mount ,so it got both new engine mounts and now runs smooth as she left the factory . Customer had problems with engine light warning and permanent loose of power , which disappears every time after switch off of the engine . But about this later on ....
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