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
  1. Home
  2. Questions
  3. 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: Loud noises when accelerating

Hi there. It sounds like an exhaust manifold, passage, or pipe has broken or otherwise opened up. Perhaps an EGR passage is at fault here. Failure that is part of the EGR mechanism could affect engine idle as well. ...

Q: Truck has little power accelerating and has a slight shake at idle

It is possible that you could be having and issue with your fuel injectors. The fuel delivery may be an issue here. I would recommend having a qualified professional use a high tech scan tool to determine if your fuel...

Q: White Smoke coming from underneath hood, Car is also overheating

If the engine has a leaking water pump or stuck thermostat or other leaks and engine was ran until the temperature went all the way to hot then it may have damaged the engine cylinder head gasket and head and...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...