Grey Smoke From Exhaust

Blue or gray smoke coming from the exhaust pipe.
Grey smoke from exhaust. A new fuel odor or drop in mpg that seems to be coming from the exhaust pipe. The black smoke may show there is a return fuel line which is obstructed. Bluegray exhaust smoke is an indication of oil burning in the combustion chamber. The exhaust takes smoke from the cylinders and removes it form the engine system so the white smoke is the result of a material being burned which shouldnt be.
The color of the smoke is usually white blue black or grey. These are possible symptoms and causes. Like blue smoke it can mean that the car is burning oil or suffering from a bad turbocharger. Unusual smoke from your exhaust is rarely a good sign so here is a round up of the possible diagnosis be it good bad or seriously ugly.
Top 5 dangerous causes of a car blowing white smoke from exhaust. The white smoke is serious if there appears to be a cracked cylinder head or an engine block that is showing fissures. What your exhaust smoke is trying to tell you car. Leaking valve seals will cause bluegray exhaust smoke.
This particular cause is more common in diesel engines than petrol engines. Excessive clearance between the valve stem and the valve guide allows oil to leak past the gap into the cylinder. Black smoke or very dark smoke coming from the exhaust pipe. A gray color is a red warning light of possible transmission fluid burning.
Inside the vehicle there is a gasket that seals the manifold to the head. What does gray smoke from my exhaust mean. Thick blue or gray smoke is an indication of the vehicle burning oil which means that oil is somehow leaking into your engines combustion chamber. Burning oil like this can cause a wide range of issues from reduced fuel economy to less than stellar acceleration.
These parts take the role of distribution the combustion mixture along with the coolant to the separated intake port. Another problem with antifreeze is if it runs out. If the exhaust smoke is blue or gray. Gray smoke is hard to diagnose directly.
White smoke or water vapor coming from the tailpipe especially in the morning when the engine is cold. If you were to have a bad fuel pump injector then it would cause white smoke to form because the proper amount of fuel did not enter the chamber at the right time.