Skip the auto shop - Our mechanics make house calls

Q: Black smoke coming out from exhaust and it wont accelerate, there is no power

asked by on

my car is running for half an hour and suddenly black smoke coming out from exhaust and when I accelerate there is no more power it wont accelerate anymore.

My car has 155345 miles.
My car has an automatic transmission.

The black smoke indicates you have a rich fuel condition happening in your fuel intake system. This means that the fuel being supplied to the motor is too much in relation to the air supplied creating an imbalanced air/fuel ratio being supplied to the motor. When this happens, you may notice a fuel smell and a lack of power as you describe. This can happen for a few different reasons such as a faulty mass air flow sensor, leaking or dirty fuel injectors and many others. I would recommend having an expert form YourMechanic come to your location to diagnose your vehicle’s running condition.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • Black smoke coming out from exhaust and it wont accelerate, there is no power

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car loud during acceleration

If the engine is making a lot of noise when you accelerate then that can be a sign of engine failure or something that is loose. A description of the noise would help. If it is a banging then it...

Q: No power to the fuel pump

Hi. I would go back over a few things. Specifically, the fuel pump relay and fuses. Check the voltage drop across the fuel pump relay while trying to start it. An older relay will pass a resistance test (the contacts...

Q: Motor warm up takes too long

If you are in an extreme cold climate then your engine will take longer to get to operating temperature if you get on the highway right away. If you before you leave your driveway hold your engine at 2000 rpms...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...