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1997 BMW 540i Question: rough running bmw 540i

 

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t5howell, Hesperia, CA, November 30, 2010, 00:33
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my 540i is running rough,shifting rough,exhaust white smoke,and smells like fuel mixture is too rich

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  • Answer #1

    November 30, 2010, 04:34
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    You really need to get it diagnosed by a BMW specialty shop to see what causing the problems. They should be able to pull out diagnostic trouble codes from the affected modules and be able to estimate the parts and repair cost for you.

    Zee

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  • Medium-star Best Answer
    December 01, 2010, 22:34
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    PCV valve on back of intake manifold. common fault. diagnostic codes won't show for this fault and unless techi knows these cars he won't know what the problem is,

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