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One Fouled Spark Plug

Discussion in 'Technical Q&A' started by TonyT4, Jun 22, 2007.

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  1. TonyT4

    TonyT4 Rookie

    Jun 22, 2007
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    Anthony Tipton
    #1 TonyT4, Jun 22, 2007
    Just pulled the plugs on my 83 308QV and noted one sooty plug with a strong smell of gasoline. Other the checking the obvious bad plug wire, does anybody have other ideas of things I should check.

    Thanks in advance.

    Tony
     
  2. PAP 348

    PAP 348 Ten Time F1 World Champ
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    #2 PAP 348, Jun 22, 2007
    Welcome to Ferrarichat Tony. :):)
    Did the car have a missfire before you removed the plugs mate?
    I would also think that you may have a leaking/bad injector to go with that fouled plug. :)
    Please fill out your profile and enjoy the site Tony. :)
     
  3. Sunracer

    Sunracer Formula Junior

    May 18, 2005
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    Pierre Beniston
    #3 Sunracer, Jun 22, 2007
    Pull the injector and check it to see if it's leaking under pressure. PB
     
  4. f355spider

    f355spider F1 World Champ
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    #4 f355spider, Jun 22, 2007
    Make sure the plug wire is connected well at the distributor cap. You might even unscrew the securing screw, trim off 1cm of wire and re-insert and tighten the screw back down to ensure a good connection.
     
  5. No Doubt

    No Doubt Seven Time F1 World Champ

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    #5 No Doubt, Jun 22, 2007
    If you don't have access to a professional workbench, then just try swapping the plug wire on one engine side with its same length mate on the other. Now swap the injectors from those two cylinders.

    Install a clean new plug in place of your sooty, gas-soaked one. Then drive for half an hour.

    Now pull the plug on the swapped mate side as well as the new plug.

    Either one gas-soaked this time?
     
  6. mk e

    mk e F1 World Champ

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    #6 mk e, Jun 23, 2007
    The injector had better leak under pressure....it's a CIS car, not EFI :)

    The injectors do get plugged up and don't spray right, so cleaning it might help....but I don't think that's it.

    Check the plug extender, those things fail pretty regularly
     
  7. TonyT4

    TonyT4 Rookie

    Jun 22, 2007
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    Anthony Tipton
    #7 TonyT4, Jun 23, 2007
    Thanks to everyone for the input. I will check the items mentioned today.

    Tony
     
  8. PAP 348

    PAP 348 Ten Time F1 World Champ
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    #8 PAP 348, Jun 23, 2007


    Oh. :p:p
    Go with the plug extender then. ;);)
     
  9. darth550

    darth550 Six Time F1 World Champ
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    #9 darth550, Jun 23, 2007
    PAP 25K
     
  10. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
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    #10 PAP 348, Jun 23, 2007


    Aye!! You again! :p:p
     

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