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The mkiv Supra Owners Club

Huge amount of smoke on start up


Guest nin73

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Hi Guys,

 

Had been noticing a small amount of white smoke on start up recently. Left the car for 6 weeks, immobiliser killed the battery dead, thats another issue. When i got it charged up and fired her up it smoked so badly i could hardly see the car or my driveway! The smoke was thick and white.

 

The smoke cleared after say 30 seconds and once warm it doesnt seem to smoke at all. Fired her up this morning, minimal smoke.

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If you mean "HUGE" amounts of white smoke then it could possibly be a HG, coolant will seep into the cylinder when the car is cooling as the coolant is under pressure, then next time you start you get a load of white smoke.

 

Condensation at startup hardly makes the amount of smoke to make your car & driveway disappear

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When i mean, Huge i am not undestating the amount of smoke!

 

Never seen anything like it, like a fire had been set in the exhaust!

 

How do i check if the HG has gone? Milky dipstick isnt it?

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I also get a huge amount of smoke on start as well, it is a white smoke & if drive for 24 hours its not to bad, if its 3\4 days then you get loads of white smoke! From what I read & gathered it is Stem Values which need to be replaced?

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When i mean, Huge i am not undestating the amount of smoke!

 

Never seen anything like it, like a fire had been set in the exhaust!

 

How do i check if the HG has gone? Milky dipstick isnt it?

Get a sniff test done on the coolant for hydro carbons. Milky residue on oil cap may also be another indication, but at this time of year and using the car infrequently a milky residue may be normal (also if the failure is only between the cylinder & waterways there could be no sign of the failure in the oil)

 

Also does it appear to be "using" coolant?

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I also get a huge amount of smoke on start as well, it is a white smoke & if drive for 24 hours its not to bad, if its 3\4 days then you get loads of white smoke! From what I read & gathered it is Stem Values which need to be replaced?

Stem seals results in dark/blue smoke doesn't it? (rather than white)

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Worn stem seals shows with a bluey grey colour smoke not white.

 

Ive just changed mine and they were totally scrap and the car only smoked for around 5 seconds before clearing.

 

As jay says get a sniff test done and it'll soon tell you if the head gaskets on its way out.

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