What causes white smoke in a diesel engine when accelerating?

This smoke is caused by damp condensation inside the exhaust pipes, muffler, and catalytic converter. Once the engine begins to heat up, the condensation evaporates and mixes with the exhaust gas, creating a tell-tale thin white smoke. … A common cause of white smoke in diesel engines is faulty injection timing.

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).

What causes white smoke from exhaust when accelerating?

If you continue to see white smoke coming out of the pipe after the engine has had a chance to warm up or while accelerating, then your coolant might be leaking internally. … This is how the exhaust smoke ends up turning white. The combination of the coolant and engine oil will create a milky appearance in the smoke.

Will a faulty diesel injector cause white smoke?

A Faulty Fuel Injector

Without getting too technical, the injectors that deliver the fuel to the combustion chamber can leak or become stuck in the open position. This means too much fuel in the engine that needs to burn off and be expelled. This is seen as gray or white smoke from the exhaust.

IT IS INTERESTING:  Is a bike with a motor legal?

How do you fix a white smoke from a diesel engine?

If the white smoke comes with significant performance loss, consider having the engine undergo a pressure test to determine if it’s caused by a leak at the valve stem or piston. In such cases, the top half of the engine will be dismantled, and the damaged valve and/or piston rings removed and replaced.

Can dirty diesel cause white smoke?

White Smoke:

Usually, white smoke indicates that the diesel fuel is not burning correctly. Unburned diesel fuel will make its way through the exhaust completely unused. Be careful of white smoke as it will irritate your eyes and skin.

Can a bad fuel pump cause white smoke?

injector pump timing is the most common cause of white smoke. White smoke will result from incomplete combustion if the fuel delivery is delayed or the pressure is decreased. … A worn out timing gear can cause the incorrect timing.

Does white smoke always mean blown head gasket?

The most common sign of a blown head gasket is exhaust smoke. White smoke indicates that your car is burning coolant that is leaking into the cylinders. … This test analyzes the fumes from the coolant in the radiator to determine whether hydrocarbons are present, as this is often a sign of a head gasket failure.

Can a bad water pump cause white smoke?

White smoke means you are burning coolant. That won’t happen from the water pump gasket. Check at the bottom of the water pump and see if it is leaking out of the weep hole. This means the pump is failing….and most likely a separate issue from burning coolant.

IT IS INTERESTING:  How long do bumper stickers last?

Can a blocked DPF cause white smoke?

In a Diesel engine with a Diesel particulate filter (DPF) system, high-sulfur fuel causes white smoke containing odorous and harmful pollutants during DPF regeneration. … The white smoke was observed when the catalyst temperature was more than 450°C, under conditions such as the early stage of DPF regeneration.

What are symptoms of bad diesel injectors?

Here are the 5 most common symptoms of faulty diesel fuel injectors.

  • Trouble starting the vehicle or uneven idling. The engine cranks but doesn’t start unless you crank it for a long time. …
  • Misfire. …
  • Smell of fuel. …
  • Dirty emissions. …
  • Increased fuel consumption and poor miles per gallon.

Can a bad turbo cause white smoke?

Hi! 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.