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      11-30-2012, 09:17 PM   #34
Drives: 2006 330i
Join Date: Dec 2010
Location: Illinois

Posts: 66
iTrader: (3)

oil leak?

this may sound crazy but i had the same problem last year. it ended up being a leaky gasket. i remember the smell though. it almost smelled moldy, possibly even urine-like. i remember the smell would come and go depending on using heat or cool and what not. You probably pull in air from 2 locations. anyway take a look and see if you dont have a gasket leak. I fixed the gasket, fixed the smell
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