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beepbeep beepbeep is offline
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Join Date: Jun 2001
Location: Sweden
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Originally Posted by NathanUK View Post
Would it run that lean Goran?
Nope, probably not. Something is wrong...

I would start with disconnecting narrow-band feed back into ECU and see if it runs better. I believe it might be WBO2 sensor that is failing and sending wrong signals into ECU, which richens the mixture to compensate for what WBO2 believes is "lean condition" ... thus black smoke.

To wrap it up:

Your WBO2 believes it runs lean. But it doesn't. It commands ECU to richen to correct, but it only gets even richer.

Your WBO2 sond might be failing.
Thank you for your time,
Old 03-16-2008, 10:02 AM
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