Read my spark plugs..

Discussion in '96-04 - 4V Specific' started by Cpotts13, Jan 30, 2015.

  1. Cpotts13

    Cpotts13 Well-Known Member

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    Just wanted to see what yall thought... changed my spark plugs today on my 2003 Mach 1 with 43k on it. How do they look? I assume they're from the factory...

    [​IMG][​IMG]
     
  2. joser714

    joser714 Member

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    [​IMG]
    They look better than mine

    Sent from my LG-D851
     
  3. chris91

    chris91 Well-Known Member

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    Here ya go guys. Always nice to have one of these charts around to guide you.

    [​IMG]
     
  4. Cpotts13

    Cpotts13 Well-Known Member

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    Thanks Chris that is helpful..
     
  5. chris91

    chris91 Well-Known Member

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    No problemo! :D
     
  6. CC'S95GT

    CC'S95GT Legend

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    There's a nice color pic like that in the back of your haynes/chilton manual too.
     
  7. Michael Plummer

    Michael Plummer Active Member

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  8. Burninriverdiver

    Burninriverdiver Well-Known Member

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    Those don't look horrible by any means, from the chart posted I'd say they fall under "normal"
     
  9. the5.ohh

    the5.ohh Legend

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    I don't know think NGK's came stock but I could be wrong. They don't look bad though. I've seen ones that were black.
     
  10. Cpotts13

    Cpotts13 Well-Known Member

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    I was surprised how "normal" they were, I used a flash light to peak down into the cylinder and all the pistons had zero carbon build up.. sweet!
     
  11. joser714

    joser714 Member

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    Had to sea foam my car before i changed the plugs. It had a violent mis fire

    Sent from my LG-D851
     
  12. azurebluemach

    azurebluemach New Member

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    I think they look pretty good. They all are similar, none stand out. On mine, the drivers side, closest to the firewall always looks a tab more heated. I should do the head cooling mod, but that's a big project.

    I use Autolite 104's and change them once a year. When I switched to these, my tune ram smoother and without pinging.
     
  13. Michael Plummer

    Michael Plummer Active Member

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    Carbon is a direct result of your A/F ratio burning in the combustion chamber. If your A/F ratio is rich or you have an oil leak then you will get carbon buildup. So without knowing anything about your setup, I'm going to say, your vehicle is running well. To get a true indication of what's really going on inside your combustion chambers and engine I use a scope:

    FYI: Bare Tool means no battery or charger

    http://www.globalindustrial.com/p/t...o-tIOoowOpEZELMMLYfUdwZkFTChEEjfF4aAhHL8P8HAQ