What Causes Black Smoke When Accelerating?

[DiDiana]

The reasons for black smoke when accelerating are: 1. It is caused by an overly rich air-fuel mixture or incomplete combustion; 2. For gasoline vehicles, the issue is more complex, usually related to problems with sensors or circuits; 3. For diesel vehicles, it is recommended to inspect and clean the diesel pump and fuel injectors. The reasons for jerking when accelerating at low speeds are: 1. A malfunction in the vehicle's ignition system; 2. Loose components in the ignition system; 3. Severe engine carbon buildup; 4. Aging engine components; 5. Excessive carbon buildup in the throttle body; 6. Untimely replacement of the air filter; 7. Excessive carbon buildup in the fuel injectors; 8. Unstable fuel pressure.