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2002 BMW 745i Question: Black heavy smoke

 

Question

larrymd, Houston, TX, September 05, 2013, 21:47
 Rookie

Car has black heavy smoke after driving a few miles; very obvious at stops.

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  • Answer #1

    cntsmith September 12, 2013, 07:03
     Enthusiast

    black smoke is very excessive fuel - should not drive as it will take out your catalytic converters - possible causes , stuck injector/coolant temp sensor failure/low compression/maf sensor failure ect... ect...

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  • Answer #2

    ABR Houston (6 Answers) , Spring, TX - (832) 742-4694
    ABR Houston February 17, 2014, 07:29
     Enthusiast

    The N62 engine in your 7 series has a few reasons why that would happen. We would have to look at it to determine what is actually happening to get a solid diagnosis.

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