My car is blowing black smoke, backfiring and idling badly.
Feb 1, 2017 at 12:29 AM
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STEVE W.
CERTIFIED EXPERT
15,113 POSTS
Black smoke is usually an indicator that you are getting excessive fuel in the engine. The other symptoms can also be caused by that. You would need to test a few parts to find out if the extra fuel is coming from a bad fuel pressure regulator or from a leaking or stuck fuel injector(s).