This is because the engine is igniting the excess fuel in the chamber and burning it. When this happens, you may end up with black exhaust smoke flowing out of the tailpipe.

Black Exhaust SmokeĪ dirty MAF sensor can also cause the engine control module to put too much fuel in the combustion chamber. In addition to the acceleration problems, your engine may also lag and stutter at higher speeds. This happens when the engine is being fuel-starved. Acceleration/Engine LagĪside from having difficulties starting your automobile, you may also notice that your vehicle’s acceleration lags. This can make it difficult to start your automobile and also cause the following problems.

Trinity Automotive advises that the skewed readings trick the module into creating an imbalance of air and fuel in the combustion chamber. Also called the MAF sensor, if this sensor becomes caked with dirt, the readings that it sends to the engine control module become skewed. If you are having difficulties getting your car, truck, or utility vehicle started, it’s possible that the mass airflow sensor is dirty.

Ford f150 mass air flow sensor problems