Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

White Smoke

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Old 10-04-2006, 04:49 PM
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White Smoke

For the last couple of months my car has been throwing white smoke from the exhaust. I'm trying to see if anyone can help me find the source of the problem.

The car warms up fine with no smoke at all. Once I get going it blows a bunch of white smoke for a couple of seconds then goes away. I only does it when the car has been sitting for a while (engine off). I checked the water reservoir and there are no signs of consumption or oil.

My current engine mods are cat back, up pipe, down pipe (just installed, it did it before too), and Accessport.

Any ideas what it might be?

Last edited by WRX-CBR; 10-04-2006 at 04:52 PM.
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Old 10-04-2006, 07:32 PM
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bring it to a meet so we can see

when the car has been sitting for a while and is cold

take teh cap off the radiator and see if oil is in it.

is there blow by

and im not going to guess turbo seals again
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Old 10-05-2006, 06:24 AM
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I actually have a very similar problem - only mine is acompanied by a 3 cylder misfire. I haven't found anything yet. ;(
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Old 10-05-2006, 06:40 AM
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Bad head gasket. Check you coolant levels. Usually white smoke is from coolant.
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Old 10-05-2006, 08:55 AM
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The only tricky thing about that, is that my coolent levels never change.
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Old 10-06-2006, 04:23 PM
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Now it throws white smoke when idling. Not in the morning (cold) though. Like if I'm at a drive through I start smoking like crazy.

Sigma, I do have blow by.
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Old 10-07-2006, 10:07 AM
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Old 10-07-2006, 10:22 AM
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i think its oil burning aka the blow by igniting

i am thinking its just because you dotn have cats
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Old 10-07-2006, 10:33 AM
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I guess I'll install a catch can (doesn't hurt). And it did it even though I had a cat in there.
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Old 10-07-2006, 10:40 AM
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If it is white and has a sweet smell it is coolant.

oil will have a burning smell to it.

Like the other guy said . head gasket.

hold a rag behind the exhaust so the exhaust will blow on it.

check the rag for coolant/water or oil.

the janitor
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Old 10-07-2006, 10:41 AM
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Thanks I'll try that. And it is a sweet smell.
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Old 10-07-2006, 05:56 PM
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he was right that means coolant and you have a bad head gasket or turbo
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Old 10-08-2006, 12:29 PM
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Yes, bad head gasket. Our 97 Legacy wagon had smoke just like that; two weeks later the head and cam gaskets failed and I came home to a big puddle of oil under the car. $2100 fix
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Old 10-08-2006, 06:15 PM
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How would one know the difference between a bad head gasket and a bad turbo? I have a very similar problem, so I am getting quite concearned.
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Old 10-09-2006, 01:00 AM
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i'm going to say bad seals on the turbo
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