What color is rich fuel smoke?
Black smoke
Black smoke is an indication that your air-fuel mixture is running rich. Gas engines are designed to run with just the right combination of fuel and air to create the most efficient conditions for combustion when spark is introduced.
What does white smoke from a diesel mean?
WHITE SMOKE occurs when raw diesel comes through the exhaust completely intact and unburned. Some causes of this include. Faulty or damaged injectors. Incorrect injection timing (could be a worn timing gear or damaged crankshaft keyway).
Can turbo cause white smoke?
A leaking turbo will usually present itself through white smoke exiting the exhaust. Usually the white smoke will result from the turbo leaking oil internally but will occasionally result from internal coolant leakage. Valve leakage is also a common cause of white smoke exiting the exhaust.
What does Blue smoke mean?
Blue smoke means oil has mixed with your gas in the combustion cycle, and that oil is being burned up and sent out your exhaust pipe with the rest of the partially burned fuel. If the blue smoke is being caused by oil mixing with your gas in the combustion chamber, then the issue is more serious.
What makes a diesel smoke?
Sometimes diesel engines emit a white smoke while starting. The white smoke is due to unburnt fuel caused by improper heating. Diesel engines need high compression and heat for fuel combustion.
What causes white smoke from diesel?
Diesel Engine Smoke: Blue, Black, or White? Blue Smoke. Most people who have owned engines have probably heard that blue smoke is generally indicative of oil burning within the engine’s combustion chambers. Black Smoke. Black smoke is caused by excess, unburned or partially combusted fuel, or conversely by inadequate air supply to your engine. White Smoke.
What causes excessive smoke from diesel engine?
Diesel vehicles may emit smoke from poor injector maintenance, excessive fuel delivery rates or poor driving technique. The following problems may be the cause of smoke from a vehicle. Gas engines may emit blue smoke or black smoke.
What causes blue smoke in a diesel engine?
Blue engine smoke is the rarest type of smoke emanating from a diesel engine. The presence of blue smoke is an indication of burning oil. Blue smoke should not be ignored but is common when starting an engine in a cold weather. The oil thins out when it is cold and some could escape into the cylinder and be burnt.