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a 363 dart iron eagle with precision PT8285 turbo plug issues ?

Discussion in 'Turbo Tech Questions' started by DaGREEKNYC, Aug 20, 2020.

  1. DaGREEKNYC

    Joined:
    Aug 20, 2020
    Need some help . Plug keeps fouling on my 95 Cobra . Car sat for a while so we put some 93 and race fuel in and changed the plugs and it ran great for 3 days and then fouled the plugs for the second time. Car is currently down tuned to 600 hp for pump fuel with 9 lbs of boost and we used Stock Ac Delco plugs . Think we need iridium plugs ? would appreciate any advise !
     
    DaGREEKNYC, Aug 20, 2020
    #1

  2. underpsi68

    Joined:
    Jul 9, 2005
    What heads are you running?
     
    underpsi68, Aug 20, 2020
    #2

  3. DaGREEKNYC

    Joined:
    Aug 20, 2020
    AFR 205H2 Heads
     
    DaGREEKNYC, Aug 21, 2020
    #3

  4. B E N

    Joined:
    Nov 22, 2016
    What is the ignition system and plug gap? Are all the plugs fouling? Did you free-air calibrate your wide band after it sat?
     
    B E N, Aug 21, 2020
    #4

  5. DaGREEKNYC

    Joined:
    Aug 20, 2020
    Msd distributor

    Accel Gen VII computer system flying led kit

    NTK wide band sensor

    NTK wide band box

    no we did not calibrate . Yes all the plugs . finding out about the gap but we just re gapped to what the old ones were . happened with the old and the new set .
     
    DaGREEKNYC, Aug 21, 2020
    #5

  6. tbird

    Joined:
    Sep 1, 2004
    Afr and idle and cruise?

    Have you verified timing with a timing light at various points.
     
    tbird, Aug 21, 2020
    #6

  7. Disney Lincoln

    Joined:
    Feb 14, 2003
    Car sat for a wile and is not fouling plugs. Sounds like injectors are not closing. Mayube have injectors cleaned out, keep running it to see if they clear up.
     
    Disney Lincoln, Aug 21, 2020
    #7

  8. nxcoupe

    Joined:
    Jan 10, 2008
    Iridium plugs won't do squat but add to your problems. Imho. Plugs is not your issue, as stated by the guys above. How is this car tuned? Did you put fresh fuel in after draining out the old fuel? Or did you dump fresh fuel into the tank with the old nasty stuff?
     
    nxcoupe, Aug 22, 2020
    #8

  9. B E N

    Joined:
    Nov 22, 2016
    You need to calibrate the wideband, it takes minutes to do and is free, that will tell you a lot. If nothing changes move to the further diagnostics. I am assuming the system is a self-learning type and if it is getting a bad signal from the wideband. The ECM will add fuel to try to correct the issue, and it won't matter what parts you throw at it.
     
    B E N, Aug 23, 2020
    #9

  10. DaGREEKNYC

    Joined:
    Aug 20, 2020
    we dumped fuel into the tank and didn't drain it . it appears when they did the dyno pulls on E85 they never cleaned out the fuel system well and the injectors were at 40-50% . had a gel inside of them and that's the end result of E85 and moisture . Bad combination ! the slightest moisture can cause phase separation of E85 and that gel like glob picks up everything inside the tank . dropped the tank as well and hopefully this is it ! thanks
     
    DaGREEKNYC, Oct 2, 2020
    #10
    nxcoupe likes this.
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