1st Gen. 1 Series (2004-2013 | E81, E82, E87, E88)
From quite some time I have this noise coming from the engine bay. The engine is N52B30 - 2006 at 275k km. U can hear it in the video posted below.
- skip to 1:25 when the engine revs go down to about ~650. Ignore the rough idle, I had a vacuum leak. At first I tough it was...