Mechanics

BMW 740 ENGINE PROBLEM

1993 BMW 740 • 285,000 miles

Lots of black sooty fuel rick exhaust out tailpipe. No check engine light and engine seems to run fine.
What might be the problem?
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Guest
March 11, 2013.



Black smoke often means too much fuel or too little air. Any history you can relate here?

Dr. Hagerty
Mar 11, 2013.