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      03-02-2017, 04:35 AM   #5
HighlandPete
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Drives: BMW F11 535i Touring
Join Date: Mar 2007
Location: Scotland, Highland Region

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Quote:
Originally Posted by tibre View Post
Well. Took the car to the dealer. It was explained as normal. A pressure release valve doing its job apparently... somehow I am not convinced with the answer. It seems a bit odd for an engine desig like this one to have something as loud as this valve going off every time you shut down the engine.

I do not recall the engine/valve doing that before...
Normal! Don't think so. Never heard a 3.0d making that sound track after shut down. Could well be a pressure (vacuum?) release, but an abnormal resonance as it is doing so.
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