Different colors of exhaust smoke

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  #1  
Old 06-15-09, 07:39 PM
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Different colors of exhaust smoke

What do the different colors (black, white and blue) of exhaust smoke indicate where your problems "may" be?
 
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Old 06-15-09, 08:37 PM
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Black is running rich (fully choked condition).

White is burning oil.

Blue is gone from my mind at the moment. It's hell to get this old!!
 
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Old 06-15-09, 09:29 PM
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Black is too much fuel
Bluish white is oil burning
White is usually gas-diluted oil from inside the crankcase burning.

On a water cooled engine, white is water getting into the cylinder.
 
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Old 06-16-09, 04:50 AM
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Thanks for your information.
 
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