Question about BMW X5 Series

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2002 smoking started while driving, alot of smoke grey in color

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Could be a lot of things:

I am assuming it's coming out the tailpipe? Did you over heat the car? I'd check the oil to make sure it isn't milky brown. If it is, it's probably a head gasket. You would have a LOT of smoke coming out the tailpipe though due to the coolant evaporating during the combustion cycle.

It could be your CCV (oil seperator) which cost about $150 in parts (if you buy them) plus labor.

It could also be your valve cover gasket.

Sorry to be so vague but more information is needed to pinpoint the problem. Hopefully this will get you in the right direction. Good luck.

Posted on Jan 01, 2011

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