i have dc header 4-2-1, and a greddy evo exhaust..and whenever i rev it up past 4000 rmp, no matter cold or hot, white smoke always pours out of the exhaust, got the **** smogged to, or attempted, failed it bad! it backfires to sometimes...what is the problem???

 

white smoke. are you low on coolant?

 

does your car pass smog?

 

i checked the coolant and its cool....yeah i failed, wasnt even close to passing it

 

oh, you did get it smogged, sorry, didn't read all the way when i first got my car, smoke came out of my exhaust too. after i got a new clutch and a new carborator, the exhaust was fine. get your cars overheating thing checked

 

what? carbs and overheating? did you read his entire post?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rugratxp &raquo;</TD></TR><TR><TD CLASS="quote">oh, you did get it smogged, sorry, didn't read all the way when i first got my car, smoke came out of my exhaust too. after i got a new clutch and a new carborator, the exhaust was fine. get your cars overheating thing checked</TD></TR></TABLE>

 

did you take out your cat? most gsr's i see with full exhaust usually puff a little smoke. maybe your fuel mixture is a little off too.

 

go to the auto store and buy that stuff you put in the gas to pass smog.

 

White smoke is water which could be a head gasket
blue smoke is oil more then likey rings
Black smoke is feul you are running to rich
hope that helps

 

Hate to tell you this man, but that's burning oil you're seeing. A rich mixture would be black smoke. People always say oil smoke is blue, but to my eyes it always looks white. (though steam (coolant) is "whiter") Also coolant going through the exhaust will have kind of a sweet, nauseating smell to it. If it's happening only when you rev up, then chances are you've blown a piston ring(s). Is it actually happening when you're at 4000 RPM or only after you let off the throttle from 4000 RPM? I'd start with a compression test. I'll bet you see a low cylinder or two.