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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

 
 
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Old 03-19-2009, 06:44 PM   #1
inlinesicks
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Join Date: Nov 2008
Location: Phoenix, AZ
Posts: 1,142
My Ride: E46, Jeep, Subaru
Engine Noise

I have a completely stock 2000 323i with about 82k miles on it and for about the first 10 minutes or so after its been cold I can hear a sort of rattle from the engine, it sounds kinda like a really really quiet diesel engine and I cant really tell where its coming from, I really doubt its bearing or valve noise because the car has always been well maintained from what I can tell(good service records, no gunk under the valve cover, bought from a very reputable dealership) and I have always used Mobile 1 0w-40, could it be the water pump bearings, or maybe the vanos but it doesnt really sound like the vanos rattle and I can only hear it at idle. Any Ideas would be greatly appreciated, Thanks.
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