2004 Bmw 645 Smoke Evident Right Hand Exhaust Only Once Engine Warm Nothing

2004 BMW 645
110,000 MILES
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Smoke is evident from the right hand exhaust only once the engine is warm. Nothing is apparent at start up. What could the problem be?
Mar 4, 2013 at 1:10 PM
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DOCHAGERTY
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What color is the smoke and does it have an aroma?
Mar 4, 2013 at 6:30 PM
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