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Old 07-20-2011, 02:13 PM   #5
frem

Name: frem
Title: United Newb
Status: Offline
Join Date: Jun 2011
Location: Herts
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Your Ride: 2003 E46 319Ci
Humming/Droning noise

I've stuck my head under the bonnet and had a good look round. The only thing I have noticed that is out of the ordinary, and you can appreciate how difficult it is to see, is that number the nearest downpipe from the exhaust manifold is nearly white in colour whereas the others appear to be black.
My assumption is that the manifold is blowing somewhat, hence the change in colour and the lack of change in noise volume?
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