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    Re: Extreme richness at startup and idle.

    It seems to have no effect. I dont understand why the ECM is coming up with that number, something is creating that response. I have the fuel pump controlled by a switch. If I turn the pump off the...
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    17,597

    Extreme richness at startup and idle.

    Ever since I got the engine running on the stand it has been very rich on startup. It did run clean but has stopped doing that. If I can make it run long enough to heat up the O2 sensor it cleans up...
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