Why does my car puff black smoke?
Black Smoke From Tailpipe This typically indicates a rich fuel condition in the engine. A fuel mixture that’s described as “rich” means that a ratio of too much fuel to not enough air is being burned in the engine. The unburned gasoline fumes exit via the tailpipe as black, acrid smoke.
Why does black smoke come out of my diesel exhaust?
Over-fueling is the primary cause of black smoke from the exhaust of a heavy duty diesel engine. Excessive oil consumption due to worn valves and valve stem seals, worn or stuck/sluggish rings from deposits, and worn cylinder liners contribute to black smoke.
How do you fix a Black smoke from a lawn mower?
Try replacing the air filter. (Note: air filters vary by mower model; view example air filter on Amazon.) Next, run your lawn mower for a few minutes. If the black smoke still appears, the carburetor might need to be adjusted in order to increase airflow.
Why do I get blue smoke coming from my engine?
While white and black smoke are related to fuel problems, blue exhaust is a sure sign that your engine is burning excessive oil. This could be caused by worn or broken piston rings, glazed or worn liners, or worn valve guides. Perform a cylinder compression check to isolate the cause.
What causes white smoke from pump line nozzles?
White smoke from older, mechanically governed, pump-line-nozzle (PLN) engines will take longer to clear up than from electronically controlled power units, which provide tighter injection timing.
What does white smoke mean in an engine?
Thick white smoke, on the other hand, can indicate a problem. In particular, it could mean that your engine is burning coolant, which could mean a problem with a head gasket or a cracked engine block. These are big repairs, but it’s important to address needed repairs sooner rather than later.
Why is there black smoke coming out of my exhaust?
Black smoke being produced from the exhaust system of is a sign of too much fuel being processed by the engine. A correct fuel and air ratio must be maintained for optimum performance, economy and emission requirements.