Could be a diesel? If not then replace your oxygen sensor on your exhaust. A bad oxygen sensor causes the exhaust smoke to be dark in color.
how can i get black exhaust smoke stuck on my dual exhaust
emissions and exhaust
Black smoke coming out of the exhaust of a car is usually due to oil being burned in the engine's cylinders. This can be caused by a worn piston ring or rings.
Black smoke means you're burning fuel, blue smoke, you're burning oil, white smoke, you're burning coolant.
It is buring oil this is a wrong answer whe engine burn oil to the exhaust smoke is a heavy white smoke no black
If the smoke is black it could be caused by a faulty fuel pressure regulator which could be causing the engine to get too much fuel.
Burning oil
Service engine
Black smoke in your exhaust is a sign of your car burning oil. You should have a qualified mechanic inspect your car and make the proper adjustments.
Unburnt fuel.
Black smoke from the exhaust it a symptom of an overly rich fuel/air mixture. Have this repaired or it will destroy your O2 sensor and catalytic converter.