Quick Answer: What Does It Mean When A Diesel Engine Is Blowing White Smoke?

What is the reason for white smoke in diesel engine?

White exhaust smoke

If your exhaust smoke is white, this is a reason for concern in a diesel engine vehicle. White exhaust smoke means fuel is not burning properly. This could mean: The engine is too cold.

How do I stop my diesel engine from smoking?

The fix for this is to add a detergent additive to your diesel fuel on a regular basis. A multifunctional treatment like Dee-Zol will clean out the deposits, reduce the amount of fuel burned incompletely burned, and can even extend the life of your DPF (because less soot are being produced at any one time).

What causes white smoke to come out of the exhaust?

One of the main causes of white exhaust smoke and coolant loss is a cracked or warped cylinder head, a cracked engine block, or head gasket failure caused by overheating. A cracked head may allow coolant to leak into one or more cylinders or into the combustion chamber of the engine.

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What does GREY smoke from a diesel mean?

Put simply, when it comes to grey smoke, diesel cars tend to emit it when they lack enough oil. Besides from being a sign of excess oil burning in your diesel engine, the smoke could also indicate: A faulty PCV (Positive Crankcase Ventilation) valve – This part is responsible for emission control.

Is white smoke bad for a diesel?

White smoke coming from your diesel engine can also be a sign that water is getting into your diesel fuel and entering the combustion space. Commonly, this happens with faulty head gaskets or a cracked cylinder head/block. So, listen to your engine when it’s blowing smoke, it’s trying to tell you something!

Can faulty injector cause white smoke?

Faulty fuel injectors are also known to cause white smoke. This occurs when the fuel injector does not spray the appropriate amount of fuel into the combustion chamber. This usually makes an engine a lot louder than normally.

What are the symptoms of a bad diesel fuel injector?

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.

Is it normal for a diesel to smoke?

Consistent smoke coming from the exhaust most likely indicates a deeper internal problem with the engine. A small puff of smoke during quick acceleration is acceptable with older diesel engines due to a lag before the turbocharger’s air flow can match the increased volume of diesel fuel injected into the cylinders.

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Is it normal for a diesel to smoke on startup?

According to Zack Ellison at Cummins, “White smoke is an indication of unburned diesel fuel. Normally, it would happen at startup in cold weather with lower compression engines and retarded timing. You get an incomplete combustion during startup and it causes raw diesel fuel to come out of the stack.”

Is a little white smoke from exhaust bad?

White smoke is an early warning sign that your engine could soon suffer major damage, so head to an authorized Chevrolet dealership service center right away when you notice it coming from your car.

Can I drive with white smoke from the exhaust?

No, it is not recommended. Due to the fact that white smoke is indicative of a blown head gasket serious engine damage can occur if you continue to drive.

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. A similar problem is indicated by blue exhaust smoke, though this is a sign of oil leaking from the gasket.

What does it mean when GREY smoke comes out of your exhaust?

Blue/gray exhaust smoke means there’s likely an oil leak and your engine is burning oil. The leak could be caused by several issues like leaking valve seals, damaged piston rings, or worn cylinder walls.

How long can diesel fuel sit before it goes bad?

Under ideal conditions, diesel fuel can be stored between six and twelve months. To extend the life past twelve months, even under the best conditions, it needs to be treated with fuel stabilizers and biocides.

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