What can cause a 2002 grand vitra to smoke blue?

Blue smoke is a clear sign telling your car engine is burning oil. What happens is that the piston rings or the valve guide seals or other components of the engine are worn or broken, causing oil leaking. The oil will flow into the combustion chamber, then it is being burnt together with the fuel, creating blue smoke.

1. What is the most likely cause of blue exhaust smoke?
2. Can a blown head gasket cause blue smoke?
3. Is blue smoke from exhaust bad?
4. Can a bad EGR valve cause blue smoke?
5. Can a bad injector cause blue smoke?
6. Can a bad O2 sensor cause blue smoke?
7. Can PCV valve cause blue smoke?
8. What does Blue smoke indicate?
9. What color smoke is a blown head gasket?
10. Can spark plugs cause blue smoke?
11. Can a bad diesel injector cause blue smoke?
12. Why does my car smoke blue when I accelerate?

What is the most likely cause of blue exhaust smoke?

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.

Can a blown head gasket cause blue smoke?

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.

Is blue smoke from exhaust bad?

Blue smoke from a car exhaust is generally a bad sign, and the cause of it will need to be repaired as soon as possible. ... In petrol cars, it might suggest that oil is leaking into the engine block where the fuel is mixed with air, while in diesel cars it may simply suggest that there is too much oil in the engine.

Can a bad EGR valve cause blue smoke?

The exhaust gas recirculation (EGR) valve might be sticking occasionally and ti can give you blue smoke, when it sticks open it allows in spent exhaust gases which interfere with the combustion process but usually gives other symptoms like rough idle and possible EML warnings.

Can a bad injector cause blue smoke?

This can be caused by worn/leaking injectors or restrictions in the air intake system. Blue smoke is normally the result of engine oil entering & burning inside the combustion chamber. ... But what we see more often than not are issues related to worn injectors.

Can a bad O2 sensor cause blue smoke?

When operating properly, the O2 sensor cannot cause your engine to smoke. ... If your car runs excessively lean for an extended period of time, you could cause serious engine damage, resulting in black, white or blue smoke from the exhaust, but usually you will be alerted to other symptoms first, such as rough running.

Can PCV valve cause blue smoke?

Stuck PCV Valve

To put it simply, a PCV valve uses the engine vacuum to pull blow-by (combustion gases entering the crankcase) gases out of the crankcase. ... And the vehicle would emit blue smoke from the exhaust upon combustion of this mixture. A bad PCV valve could cause major engine trouble if ignored.

What does Blue smoke indicate?

Blue smoke can often look like grey smoke at first. But if you notice a distinctive bluish tint, it may signal that the engine is burning lots of oil. This could be due to worn engine components like piston rings, valve seals, or PCV (Positive Crankcase Ventilation) valves.

What color smoke is a blown head gasket?

White Exhaust Smoke

White smoke billowing out of your exhaust means that coolant is likely leaking into the cylinders. This usually happens when there has been a breach in the head gasket, which makes the coolant create this white steam.

Can spark plugs cause blue smoke?

The most common cause of blue exhaust smoke is oil leaking past engine seals and into the cylinders where it then mixes and burns with the fuel. ... Oil leaking into the cylinders can cause a rough idle, misfire and fouled spark plugs.

Can a bad diesel injector cause blue smoke?

No, blue smoke is caused by oil, your engine is burning oil, fuel injectors work or they don't work, there is no intermittent on injection modules.

Why does my car smoke blue when I accelerate?

Blue Smoke From Exhaust When Accelerating

When blue smoke is emitted from a car's exhaust pipe, this usually indicates that a leak in the engine's valve seals is allowing oil to leak into the combustion chamber where it is being burned along with the fuel. This may be due to natural deterioration or a faulty part.