My 2011 335d is blowing black smoke any tips on trouble shooting?
My 335d is blowing black smoke, I have done some research, and it points to a blown turbo, fuel injectors, or hose lines. Any tips on how to exactly find the cause without having to basically take my engine apart, as well as a price range on how much it might cost to fix. Another note, when I was test driving it to see what exactly was happening, when I got to 6th gear and 80 mph, it would only gain maybe 1 or 2 mph at a time, when I would have the pedal fully down. Any help would be appreciated!
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