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  1. #1

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    Engine flooding plugs up and not starting after its been off for 1 or 2 hours

    Hi, installed a tune with these AFR numbers and 58 Psi on the fuel regulator.

    Tune numbers
    60-9200-101 60-9200-102

    idle 13.6 12.6 12.8
    2000 12.7 12.4 12.8
    2500 12.4 12.4 12.9
    3000 12.5 12.3 12.4
    3500 13.5 13.4 13.3
    4000 14.2 14.2 14.2
    4500 13.6 13.6 13.8
    5000 14.2 14.1 14.2
    5500 13.9 13.6 13.7
    6000 13.6 13.8 13.1
    6500 11.2 11.4 11.1
    7000 10,4 10.5 10.4
    7500 10.7 10.4 10.5
    8000 11.3 11.2 11.2
    8300 11.3 11.3 11.3

    It runs great but after shutting it down for 1 or 2 hours, it will not start up. It sputters for a second and then only turns over.
    I pull the spark plugs and they are wet with fuel, I drown crank it a few times in which I can smell and see fuel mist from the cylinders. Let it sit for a bit to dry, put the plugs back in and it fires up.

    It does start up perfectly if its off for only 10-30 minutes.

    I did candoo pro the injectors (they don't leak and are new) (Spark plugs are new and are igniting as they should)

    Is it possible that the engine temperature sensor is the culprit? Does the ECU reference to the engine temperature sensor when it starts up?
    Sensor did test at 2666 Ohms, specs say between 2280 and 2736 ohms when its 19-21C.

    Any other ideas or experience with this issue?
    Thank you

  2. #2
    dcuhpw's Avatar
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    Subscribed. I have a somewhat similar issue but without a tune

  3. #3

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    After pulling and reinstalling my spark plugs several times, I noticed that the spark plug gap was smaller (.25ish) then the .30 needed. I gapped it to specs and crossing my fingers.


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