some black smoke is normal, however, if you think yours is smoking more than normal, have the timing of your injection pump checked, you could be dumping too much fuel....
The heavier you accelerate the more smoke you'll make regardless of injection pump settings so get the injectors right and lay off the pedal.
Oxygen sensor
Possibly bad glow plugs.
It could be a head gasket or a cracked head. Look at the exhaust manifold for each cylinder on the side that has the white smoke, the cylinder that has the leak will cause that port on the manifold to get super hot. One way to quickly identify which port is to spray some cheap black (or color of choice) paint on the exhaust manifold and fill the radiator and start the engine. The paint on the bad cylinder will burn off first.
Sidney Poiter
dude you are so stupid it come out in youre poo
Could be a diesel? If not then replace your oxygen sensor on your exhaust. A bad oxygen sensor causes the exhaust smoke to be dark in color.
blown turbo - worn turbo bearing causing oil to suck through and into exhaust manifold - results in no power and neat oil burning in the exhaust - major black smoke
Unburnt fuel in exhaust.
Already been done. Diesel Particulate Filters and Diesel Exhaust Fluid.
The black smoke is caused by too much diesel fuel being supplied to the engine when you first open the throttle. Quite often this happens when the fuel injectors are worn and /or the turbo is not coming up to speed quick enough.
It is buring oil this is a wrong answer whe engine burn oil to the exhaust smoke is a heavy white smoke no black
engine tune just a major service then maybe a new exhaust system
Black smoke coming out of the exhaust of a car is usually due to oil being burned in the engine's cylinders. This can be caused by a worn piston ring or rings.
changed engine
Their injection pump is set too rich, and lets more diesel into the engine than the engine can burn. The partially/badly burned diesel is what comes out as black smoke.
If black smoke is coming out of the exhaust of a 1986 Ford Ranger, it is likely burning oil. It's possible that a seal is leaking in the engine.
Due head gasket worn out