Q: it exhasts black smoke with particles and loses power after the drive of 30 minutes in a hilly or rough roads. what are the causes

asked by on

I have kia grand sportage 2005 . It exhasts black smoke with particles and loses power after the drive of 30 min in a hilly and rough area but it runs well on long and plain routes however, black smoke continues in all the drives.

My car has 65000 miles.
My car has a manual transmission.

The black smoke is caused by the engine running excessively rich with fuel. This can be due to more than a couple reasons and a full diagnosis would need to be done to isolate the problem.

If you have an aftermarket device on your computer data link connector from your insurance company or from another source then try removing it and cycle your key several times. Afterwards, go on a road test to see if it runs better. These devices are know to cause various problems with vehicles. If you do not have a device like the one I’ve described then ignore this portion.

If the Check Engine Light is on then have the computer scanned and the codes will need to be diagnosed. Also, try cleaning your mass airflow sensor and replace the air filter with only a dry type filter. The oil type filters are known to foul the sensors and cause problems like these.

I’d suggest getting your car inspected by a certified technician, such as one from YourMechanic, to diagnose the smoke firsthand and make the necessary repairs to your vehicle.

Was this answer helpful?
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. it exhasts black smoke with particles and loses power after the drive of 30 minutes in a hilly or rough roads. what are the causes

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 shuts off, smoke and black water from muffler

The color of the smoke can point us in the right direction of the problem. Blue or purple smoke indicates oil burning in the combustion chamber and can be caused my weak piston rings, worn valve seals or a malfunctioning...

Q: How do you use the auxiliary input jack on the radio?

Your car’s audio system allows you to listen to AM and FM radio, play CDs, and even satellite radio. However, you can also connect an external device with the auxiliary cable. This is the ideal way to connect an external...

Q: Fuel Rail System Error Code

Considering that the code is related to a problem in the fuel system, you should leave it to the professionals to avoid personal injury. When fueling the car, check twice to make sure the fuel cap is fastened properly. Low...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.