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black smoke when vtec hits?

Old Feb 7, 2005 | 03:52 PM
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Default black smoke when vtec hits?

my friend has a 2000 GSR, whenever he hits VTEC black smoke shoots out of the exhaust. im thinking he messed up something when he got his Apexi Vtec controller. anyone know why his motor does that?
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Old Feb 7, 2005 | 03:59 PM
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Does the smoke have a bluish tint? If so, oil is getting into the combustion chamber.
Otherwise, it's may be fuel related. :dunno:

Without talking to the owner first hand, I can't make a meaningful diagnosis. h:
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Old Feb 7, 2005 | 03:59 PM
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im pretty sure its just a matter of unburnt fuel...my friends del sol does the same thing..
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Old Feb 7, 2005 | 04:00 PM
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It's running rich. If oil is burning, it's a whitish/blue smoke...not black/blue.
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Old Feb 7, 2005 | 04:28 PM
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seems like ur burning oil, if its doing it when vtec hits
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Old Feb 7, 2005 | 06:04 PM
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Originally Posted by RicoD
seems like ur burning oil, if its doing it when vtec hits

Oil does not burn black.
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Old Feb 7, 2005 | 06:12 PM
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hmm...doesn't sound good to me
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Old Feb 8, 2005 | 09:45 AM
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it only happens when vtec hits and then black smoke starts shooting out of the exhaust pipe. im puzzled on this one. black smoke means hes running rich, but only when in vtec?
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Old Feb 8, 2005 | 11:43 AM
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yes Honda engines run a little rich in VTEC as a cushion
shoudlnt worry about it
my Prelude did it and my cousins GSRs all do it
150K on both of them and ever a problem
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Old Feb 8, 2005 | 11:50 AM
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oh ok thanks man, he didnt ask me the question or anything. i just saw it and i didnt like the way it looked so i asked you guys.
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