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  1. #1
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    Default Plugs keep fouling

    Hi all,


    Can some one explain to me why my spark plugs keep fouling up? It's basically the rim of the plug that is the dirtiest of all (which is black). I sand paper them all clean (the rim and the points) and the motor runs sooooooo much better. I'm talking about it idling shit loads better, its more responsive, it's actually a totally different feel. I'm getting quiet tired of cleaning these to get back the performance I lose.

    I have 3.55 gears with a tri- matic. I give it to it hear and there but that doesn't really do much in a way cleaning the plugs.

    Thanks in advance.
    Last edited by Megaman; 17-02-2010 at 01:53 PM.

  2. #2
    Try not to shit me please ahk068's Avatar
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    too much fuel etc etc. look about on here or maybe half way down the first page and you'll find info.

    I thought I was lazy
    I'm far stupider than you realise

  3. #3
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    Quote Originally Posted by ahk068 View Post
    too much fuel etc etc. look about on here or maybe half way down the first page and you'll find info.

    I thought I was lazy
    lol, spark plug 101? I'm going to be lazy and ask what exactly is causing too much fuel? The electric fuel pump? The fact I have no return line to the tank ? Could it be the DP secondary rods? Anything I could fix or test?
    Last edited by Megaman; 17-02-2010 at 02:13 PM.

  4. #4
    Try not to shit me please ahk068's Avatar
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    Quote Originally Posted by Megaman View Post
    lol, spark plug 101? I'm going to be lazy and ask what exactly is causing too much fuel? The electric fuel pump? The fact I have no return line to the tank ? Could it be the DP secondary rods? Anything I could fix or test?
    Could be pump,return line could be a factor, knowing what carby you run and jetting etc would be helpful, do you run a fuel pressure gauage, what type of fuel pump, details on motor?
    I'm far stupider than you realise

  5. #5
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    Ok, reading the second post to your thread, Bill355 says go down a size on the secondary rods. So from DP to ???? Would that be CX??? Should I just give those a try and see how it goes? My back plugs are the foulest so that would make sense. (keeping in mind it was dynoed with the CX's first and then upgraded to DP's which did give more power so??)

  6. #6
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    Quote Originally Posted by ahk068 View Post
    Could be pump,return line could be a factor, knowing what carby you run and jetting etc would be helpful, do you run a fuel pressure gauage, what type of fuel pump, details on motor?

    pump is a carter running at 6 PSI. Running a quaddy but I don't know what the jetting is. All I know is that they are running DP rods. The motor is a 308, 286, 10:1 comp, performer. No pressure gauge. Fuel would be either BP ultimate or Mobile 8000.

  7. #7
    Try not to shit me please ahk068's Avatar
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    If you're not running a guage how do you know its 6psi. Dont trust what written on the box as size of fuel line etc will effect it. 6psi is a shade high but not ridiculus. Pungent or Smitty know a fair bit about quaddy's so maybe PM them.
    I'm far stupider than you realise

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