1997 BMW 540I WHITE SMOKE

  • Tiny
  • rubenrod61
  • 1997 BMW 540i

Engine Performance problem
1997 BMW 540i 6 cyl Two Wheel Drive Automatic 98500 miles

On startup will run just a little rough. After about 2 miles a strong smell like a heater kicking on for the first time comes into the cabin followed by a large amount of white smoke billowing from the exhaust. Quits after about 15 seconds.
There is no coolant mixing with the engine oil and I sprayed the engine to see if there were any leaks and did not find anything. The engine runs fine and there are no warning lights.

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Thursday, December 17th, 2009 AT 1:20 PM

1 Reply

  • Tiny
  • Dr. Hagerty
  • Expert
  • 9,717 posts

Your description sounds like a cooling system leak, a pressure test overnight with the spark plugs out will see if it is pushing coolant into the cylinders.

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Saturday, December 19th, 2009 AT 10:44 AM

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