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General => The garage => Topic started by: Mattb87 on 22 February 2012, 23:20

Title: White smoke?
Post by: Mattb87 on 22 February 2012, 23:20: Am I right to think White smoke is a sign of unburnt fuel on a petrol vehicle
Title: Re: White smoke?
Post by: dan2252 on 22 February 2012, 23:46: tends to be black unburnt fuel. if i remember white is normaly water? correct me if im wrong but im pretty sure mate, its not just steam is it?
Title: Re: White smoke?
Post by: Wayne on 22 February 2012, 23:49: Quote from: Mattb87 on 22 February 2012, 23:20
Am I right to think White smoke is a sign of unburnt fuel on a petrol vehicle

White smoke is a sign that water is entering the combustion chamber so could a sign your head gasket is in trouble.
Title: Re: White smoke?
Post by: ScottA on 23 February 2012, 00:26: Or it could just be moisture in the exhaust etc
Title: Re: White smoke?
Post by: Mattb87 on 23 February 2012, 02:01: Well been having running problems so basically cat has been replaced today, no water loss atal from header tank was thinking maybe lambda sensor problem
Title: Re: White smoke?
Post by: Mattb87 on 23 February 2012, 02:05: But also haven't had the car on the road for about 3 weeks now
Title: Re: White smoke?
Post by: Wayne on 23 February 2012, 13:45: Quote from: Mattb87 on 23 February 2012, 02:01
Well been having running problems so basically cat has been replaced today, no water loss atal from header tank was thinking maybe lambda sensor problem

Mixture / fuel problem would be black smoke.
Title: Re: White smoke?
Post by: AlexMozza on 23 February 2012, 20:06: Sounds like water in the chamber. How long have you run it for, if it was condensation, after a 20 mile drive you would expect it all to boil off.
I would take it for a fair distance drive, if it clears up then it was moister, if not sounds like HG trouble.

Wip the head off, get it skimmed and then put a new HG on :D
Title: Re: White smoke?
Post by: Mattb87 on 23 February 2012, 23:10: Must of been condensation as seems to have cleared up now, may get emissions checked anyway
Title: Re: White smoke?
Post by: gedbedhead on 28 April 2012, 21:17: its also wise to check your brake fluid level have heard of instances of fluid leaking past the servo into the vac,when burnt off white smoke.