White smoke coming out of exhaust diesel

What causes excessive smoke from diesel engine? Why would a car blow white smoke? Why is white smoke coming from my exhaust? A steady stream of white smoke during normal driving conditions points to fuel vapors , or in some cases, raw fuel exiting the exhaust. Worn or defective glow plugs, improper engine timing and defective fuel pump pressure will allow excess fuel to exit the exhaust in the form of white smoke.

If you the white smoke consistently comes out and the sweet odor smell is present, then it is definitely a problem with your coolant leaking. White smoke occurs in a diesel engine when the diesel fuel goes through the engine and reaches the exhaust without having been burned. Diesel Engines Blowing White Smoke from Exhaust. WHITE SMOKE occurs when raw diesel comes through the exhaust completely intact and unburned. Some causes of this include.

One cause of white smoke from the exhaust might be the engine leaking coolant. If the engine leaks coolant, it will be burned by the heat of the engine and then come out as smoke from the exhaust. A problem with antifreeze might also be causing white smoke to come from the exhaust. Antifreeze is used to stop your car from seizing up in cold weather. White smoke often occurs when there is either too much fuel being injected into the combustion chamber, or not enough heat to burn the fuel.

The white smoke is a result of combustion temperature in your engine being too low. To be more specific, the white smoke you see is your diesel fuel , unburne or only partially burned. The commonest reasons for this lie in the fuel system. The latter issue can be put down to a problem with engine valves, the engine’s piston rings or the cylinders. Once that happens, the oil will become contaminated.

The first sign of having contaminated oil is white exhaust smoke coming out of the tailpipe. As this continues, the white smoke will begin to have a sweet odor smell that won’t go away. You may commonly see white smoke coming from the exhaust on cooler days upon starting. Why Does My Diesel Smoke So Badly.

Mercedessource 69views. White Exhaust Smoke Head Gasket Repair Bars Leak Head. White smoke can be a result of raw diesel coming out of a car’s exhaust before it has been burned properly. White smoke occurs as a result of combustion temperature being so low that only partial combustion occurs and the partially burned fuel that exits the exhaust is in the form of a white vapory smoke.

Technically, the white color is caused by the light-scattering characteristics of the re-condensed droplets of fuel (un-burned or partially burned) larger than one micron. This causes white smoke. Normally, it would happen at startup in cold weather with lower compression engines and retarded timing. White smoke means that the diesel fuel is not burning correctly due to a lack of heat in the combustion chamber. When starting up a diesel engine, we need to use a glow plug to cause ignition of diesel fuel.

Once the engine is warmed up, the use of the glow plug is not necessary as the heat of the engine makes ignition of diesel fuel.