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Hi, I have seen blue smoke coming out of the exhaust regularly but not all the time, usually/almost always after a long drive. It comes and goes. When it is not burning, even if the car accelerates, nothing unusual happens. I suspect it could be either the turbo or valve stem seals. Has anyone...

Hi, 2007 BMW 320i e92 2 litre petrol 106K miles check engine light codes suggest nitro sensor signal rich, post cat o2 sensor signal stuck rich Check engine light came on after driving on the motor way for a couple hours. previously an MOT test revealed there is a minor leak of exhaust gas...