Hi all iv read a lot of posts similar to my problem blue white smoke from exhaust and fixing it be changing crank case filter iv done the bmw vortex mod . and still the same is it possible the main unit the filter goes into is faulty and is there a way to test it. another problem or not should the mill light come on if i unplug the fuel rail sensor plug and start the car my one does not come on no matter what i unplug strange the mill light works as its on with the ignition on the goes out when i start it