smoke coming out when in vtec

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Feb 11, 2005 | 10:17 PM

black em1

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Joined: Jan 2005

Posts: 7

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From: pasadena, ca, usa

smoke coming out when in vtec

hey guys i have a 99 civic si and when its in vtec mode there is smoke coming out my exhaust.wondering what that can be from?thanks for the feedback!!

Feb 12, 2005 | 07:25 AM

krazie1

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Joined: Sep 2003

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From: San Fernando, Kali, usa

Re: smoke coming out when in vtec (black em1)

sounds like valve guides>!!!!

Feb 12, 2005 | 04:47 PM

Mike K

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Joined: Dec 2000

Posts: 3,499

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From: Bellingham, WA, sucka

Re: smoke coming out when in vtec (krazie1)

valve guides? lol.

piston rings, buddy.

Feb 12, 2005 | 07:48 PM

dmxsoulja3

Honda-Tech Member

Joined: Nov 2004

Posts: 807

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From: fl

Re: smoke coming out when in vtec (Mike K)

how about its pretty normal, most every Honda ECU is setup to be Rich in Vtec, its probably just black smoke...if its exessive white smoke or grey smoke, that may be another issue, but it is very common for normal vtec operation to include some black/rich fuel smoke