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I have a 2002 Mitsubishi Galant and it blows black smoke when I push the accelerator. Why is that?
7 Answers
DavidH25 answered 5 years ago
Black smoke is unburned gasoline. Possibly your o2 sensor has failed and not sending a signal to the ECU, or the wrong signal, that is what controls the fuel/air ratio and your car is running very rich
tenspeed answered 5 years ago
Another possible cause is a bad fuel regulator. The increased fuel pressure squirts extra fuel into the cylinders.
tenspeed answered 5 years ago
Did this start suddenly or has it been happening a long time? If it has been a long while, it could be worn piston rings and that could be burning oil.
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