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      02-08-2021, 09:00 PM   #2
mehrlovin
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Drives: 2007 328xi E90
Join Date: Sep 2019
Location: Vienna, Virginia

iTrader: (0)

I have an N51 as well and this does not sound like my issues (vacuum pump and power steering pump failed). The pump sound makes me think its something air focused and possibly crankcase related.

https://www.pelicanparts.com/BMW/tec...eplacement.htm
Appreciate 0