White Smoke, From the exhaust Options

[JoKeRkId613]

I'm worried. white smoke comes out of my exhaust when i turn my car on. what can it be? thanks!

[dan4]

yeah check the oil and see if it is a milky brownish color, if it is then your headgasket it probably blown

Right ignore that matey. C'mon lads if your HeadGasket (HG) is blown and that is happening then your car will not smoke. It will only smoke if coolant is getting into the combustion chamber. It will do this through a split between the water jacket and the cylinder. If it is only when you first start your car then ignore it - condensation

Do you have a gutted cat, if you do that is why, mine does the same thing but once it is started it clears up

.

well said, mine smokes a treat when first started now ive de catted

If it continues when warm then you may have a prob....

HG - Test for exhaust gases in coolant....
Valve stem seals - normally when on slowing down in gear and then accelerating again but this is blue smoke normally
Piston rings - mainly blue smoke all the time and loss of power but symtoms of valve stem seals too

test compressions of each cylinder too!

Im dreading any smoke from my gt four when it eventually comes

This post has been edited by dan4: Jun 2, 2005 - 6:35 PM

[mikew04]

A blown headgasket can EASILY cause your car to smoke. The exact same thing happened to me with my old car. I used seafoam (not sure if that was the cause or not, but the engine only had 105k on it) and a few days later was blowing white smoke. Did a compression test, was way too low in 3 and 4. Decided my headgasket was blown and went to work.

If you have white smoke well after startup, then check your oil to see if its milky, and do a compression test. If you aren't sure, you should probably take it to a mechanic.