The black smoke is usually unburned fuel from the vehicle running too rich. If the check engine light is on you can pull the codes which will give you guidance. O2 sensors are common as well as a variety of ignition & other sensors. Test components before replacing, you can spend a lot of money guessing and throwing parts at the vehicle.
Possibly bad glow plugs.
It's running too rich.
Blowing black smoke typically means that the vehicle is either getting too much fuel or not enough air. Check the air cleaner and make sure it's clean, and if that's not it, check the injectors
change fuel filter
Blowing black smoke is indicative of an oil leak in the engine.
Why does my truck skip and pop on one side and blows black smoke??
300zx twin turbo lots of black smoke and running rough
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why could there be black smoke coming out my 2000 calalier
If it is turbo diesel, then the turbo is blowen
Black smoke is caused by excessive fuel in the engine
The black smoke that a diesel engine blows out is fuel that is unburned. The black smoke can be caused from over-fueling, poor fuel quality, or dirty or worn fuel injectors.
most likely timing is off or a bad valve
Not all cylinders firing? Check spark plugs/ wires Do a compression test to determine which cylinder is not firing
it burns oil... ur rings might be bad or if its just when you first start than its ur o rings Black smoke indicates excessive fuel (flooding). Blue smoke indicates oil. White smoke indicates coolant.
Possibly bad glow plugs.
its called mainstream smoke