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White smoke after WOT

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Old Sep 27, 2003 | 07:25 PM
  #1  
WestSide's Avatar
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Default White smoke after WOT

After a WOT run today, i left it in gear and let it rev down from around 6k rpms. My buddy (in his mustang behind me ) reported that I was billowing white smoke. This means I'm burning oil, correct? I have no oil leaks, but I do have an aftermarket cam with 918's (very small lift cam). Could this be a broken/cracked valve spring? My track times are much slower as well...any idears?

Matt
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Old Sep 27, 2003 | 08:01 PM
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Default Re: White smoke after WOT

Letting it rev down from redline is very bad. The throttle body is closed, yet the engine is trying to suck mass amounts of air in. The vacuum created is huge, and that is going to suck in a heck of a lot of oil, which in turn produces the white smoke.

Take it outta gear next time or push in the clutch. Brakes are for slowing down, the engine is for speeding up
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Old Sep 27, 2003 | 08:12 PM
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Default Re: White smoke after WOT

i thought white smoke was coolant, blue smoke was oil, and black smoke was fuel? does it matter whether it's on decel or accel
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Old Sep 27, 2003 | 08:13 PM
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Default Re: White smoke after WOT

Ahhh...something new learned. I was unaware that this has a negative effect. Thanks for the input.
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Old Sep 27, 2003 | 11:33 PM
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Default Re: White smoke after WOT

Uh, I'm with z28kid98 on the white smoke/coolant. Sounds like it's pulling water in on decelleration, I would think possibly because of the huge vacuum you're pulling let it suck, er, spin down like that. To be sure, if the "smoke" dissipated quickly, it's water/coolant vapor. If it lingers, then it's smoke.
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Old Sep 28, 2003 | 03:10 AM
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Default Re: White smoke after WOT

Neutral, brakes, or higher gear and brakes. In gear with 0 throttle at 6K is a no-no.
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Old Sep 28, 2003 | 10:08 AM
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Default Re: White smoke after WOT

white smoke is coolant, darker smoke with a hint of blue is oil
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