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Old 12-09-2009, 05:23 PM
dicor's Avatar
dicor dicor is offline
I'll do what I want!
Location: Bucks County, PA
Join Date: Dec 2007
Posts: 288
Mein Auto: 04 X3/94 325I/06 325 I
Hissing sound?????

A very strange hissing sound was coming from my engine this morning around the radiator area. It sounded like a vacuum leak, maybe?? After running it for 30 minutes it went away. It ran smoothly as usual, idled fine, temp gauge normal everything was fine except for the hissing. I can't imagine what it could have been. Anyone else experience this?
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