What causes black smoke from car exhaust?
What causes black smoke from car exhaust? Black smoke from your exhaust Black exhaust smoke simply means that your engine is burning too much fuel. Engines need both fuel to burn and oxygen to burn it with. If there's too much fuel in the combustion chamber and not enough oxygen to burn it with, it can cause black smoke to come from your exhaust. Why is my fire giving off black smoke? Smoke is the biproduct of the fuels it is burning. Thick, black smoke indicates heavy fuels that are not being fully consumed. At times, black smoke can be...