Y when I sit at a stop lite or n gear does the car blow black smoke when u take off or at a stop it runs ruff

Shady Loc RJ

Asked by Nov 24, 2014 at 06:03 PM about the 1983 Cadillac DeVille Base Coupe

Question type: General

2 Answers


Head gasket but more likely it skipped trimming.


Black smoke is a typical sign of an engine that is running too rich. Have your engine specs checked and you will probably find you are causing gas to enter the engine and not burn completely because the timing or something similar needs adjusting or repair.

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