White smoke from exhaust on startup diesel

Condensation that accumulates inside the exhaust pipes , converter and mufflers can produce a puff of white smoke upon diesel engine start-up. In very cold temperatures, the heated exhaust can freeze into minute fuel droplets when exiting the exhaust and produce a more prolonged emission of white smoke for a very short period of driving time. White smoke occurs in a diesel engine when the diesel fuel goes through the engine and reaches the exhaust without having been burned. This typically occurs due to the engine being too cool to burn the fuel , often resulting from low compression in one cylinder, problems with the fuel injection timing or a defective fuel injector.

The most noticeable symptom of internal coolant leakage is when the white smoke is billowing out of the exhaust pipe and leaves a sweet odor in the air. The white smoke is due to unburnt fuel caused by improper heating. Continuous white smoke while driving is one of them. Diesel engines need high compression and heat for fuel combustion. If you are having a diesel , white smoke may be unburned fuel or coolant going through the engine.

But mostly, it is the incorrect injector timing in the cylinders. 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. This could be occurring either because the engine’s fuel injects are faulty, or as a result of low cylinder compression.

The latter issue can be put down to a problem with engine valves , the engine’s piston rings or the cylinders. 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 ). What causes white smoke from diesel exhaust?

How to fix black smoke from exhaust? Can too much oil cause white smoke from exhaust? This pump is responsible for pumping diesel into the cylinders of a diesel engine. This is because the two stroke engine have back up oil which normally enters the fuel chamber to lubricate the piston.

If you see white smoke during startup only, then this is probably because oil leaks pass the valves and mixes with any moisture present in the car’s exhaust. When you park your car under extremely cold conditions, the car becomes too cool, its air shrinks and starts producing moisture. 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. They range from faulty fuel injectors to retarded fuel injectio n timing, or even low compression. This might be caused from the engine being too cool to burn the fuel, low compression in cylinder(s), fuel injection timing, defective fuel injector, burnt out glow plugs, clogged air filter or poor quality fuel. If you use the wrong fuel in your car, then smoke will come out of the exhaust.

White smoke might happen if you use unleaded when you should use leaded or vice versa. However, if you put diesel in a gas engine, then thick smoke will come out immediately and your engine will splutter to a stop. In this case, some white smoke is the least of your worries.

This is due to the fact that colder air, which is more dense than warm air, lowers temperatures in engine cylinders at the end of the compression stroke. This colder air leads to reduced combustion of the fuel that has been injected into cylinders. Another possible issue is a worn-out injector, an injector with a cracked tip, or a bad harness.

Normally, it would happen at startup in cold weather with lower compression engines and retarded timing. 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.