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.
yes
buy a chip or programmer. straight pipe your exhaust.
Under heavy acceleration all diesels produce black smoke. It's a product of waste fuel being exited via the exhaust pipe and is a sign of inefficiency. Older diesels also produce black smoke under "normal" conditions and this also a cause of unspent fuel, but mainly because of age.
emissions and exhaust
If you have black smoke coming out it would be because you have bad timings, i have a buddy who had that happen to his jeep and we replaced the spark plugs and air filter and fixed the timing and it solved the problem, but wen you blow black smoke its because of bad timing it happens with diesels to.
buy a cummins
how can i get black exhaust smoke stuck on my dual exhaust
He is a US citizen of Italian and black ancestry
Black smoke, from any diesel, is the result of partially burned fuel. Overfueling will cause black smoke.
What can cause black sooty exhaust is bad valve guides. When the guides are bad oil leaks into the cylinder when the car isn't running. When the car starts it produces black exhaust.
Service engine
It is buring oil this is a wrong answer whe engine burn oil to the exhaust smoke is a heavy white smoke no black