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The mkiv Supra Owners Club

Plugs re-gapped but running rich!


Nick
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I've now re-gapped the plugs to .85mm, they were all around .75mm.

 

I now have another problem though, the plugs were covered in black carbon deposits suggesting that it's running too rich.  I'm not too surprised, a mate of mine says he can smell petrol when I boot it and I've been told I'm getting a few flames out the back.

 

I checked the O2 sensor with a scope and it's fine so what's going on?  The FCON's been removed and the AVCR is turned off so there's nothing to interfere with the ECU.  I have both cats removed and a fuel cut device that doesn't work, I'm baffled.

 

This car is driving me crazy.

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PTS in Luton are apparently okay, but Im not sure how good they are with Supras. The last person I know that went there did most of the tuning and setting up themselves as thats what they wanted to do.

 

Otherwise just go to Power Engineering who might not have a rolling road capable of taking the full power from a Supra but they can certainly check the fueling etc.

 

JB

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