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  1. #1
    tick.. tick.. RXPteamtimebomb's Avatar
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    grey/greenish color on spark plugs??

    I recently de-winterized my ski and have rode it for about 8 hrs. Installed new plugs, last time I took it out, after riding I pulled the plugs and found them to have a slight green hue to them, the plug from cylinder #1 has some red coloring around it as well... the electrode at the end of the plug is the only part that is starting to get this green hue on it... what could this be? it almost is the color or a corroded penny, or copper, but not quite that color green yet, more of a greyish/green.. sorry for the crappy pictures, hard to get a good shot, please let me know if anyone has seen this before or if it is something I should worry about, thanks
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  2. #2
    dduck dduck1628's Avatar
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    I saw that when I used to mess around with crappy hot rods as a kid. Shell gasoline used to cause that. The gas itself had a orangish/redish tint that would find its way onto the spark plugs. That was back in the late 80s though.

  3. #3
    tick.. tick.. RXPteamtimebomb's Avatar
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    ttt

  4. #4
    dduck dduck1628's Avatar
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    Excessive green oxide indicates overheating the plug. a lot of spark-plug electrodes have an alloy composition that will oxidize green when subjected to high temperatures. The nickel oxide on the center wire and strap would show up first at the tip of the electrode (the hottest part) and progress from there. Some would suggest going to a colder plug. I suppose a lean condition could cause this as well.

  5. #5
    Green color some times means salt water on it.

  6. #6
    GTXX's Avatar
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    have you used any additives to the fuel? the will cause some odd colors.

  7. #7
    dduck dduck1628's Avatar
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    churras, I never thought of that. Salt air could cause the oxidation to start and continue while the ski was sitting up over the winter. May be nothing to worry about.

  8. #8
    maybe bad winterized, put new plugs and see how it looks, what intercooler do you have?

  9. #9
    rxpblast's Avatar
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    Quote Originally Posted by churras View Post
    maybe bad winterized, put new plugs and see how it looks, what intercooler do you have?
    i can answer for him, he has a stock IC.

  10. #10
    i asked cause on my XS IC i had a water leakage and the plugs get green colour.....
    Hugo

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