2001 BMW 740

2001 BMW 740
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5OUT8UP
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Engine Mechanical problem
2001 BMW 740 V8 Automatic 84000 miles

when I start my BMW 740il a big plume of white smoke comes from the tailpipe then goes away. What could it be?
Nov 16, 2008 at 8:53 AM
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DOCHAGERTY
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It could be condensation or it could be engine coolant. Pressure testing the cooling system overnight with the spark plugs out might show which cylinder(s) are filling with coolant. Does the cooling system have a water/coolant mix? If so, then a sweet aroma will accompany the white smoke.
Nov 16, 2008 at 10:46 AM
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