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  1. #1
    Tony's Avatar
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    Question about reading plugs

    Can someone point me to the post about reading the side (grounding) electrode. I tried plug chops today with brand new plugs but I'm not quite sure what to make out of the results.
    Last edited by Tony; 10-06-2007 at 09:20 PM.


  2. #2
    casey67's Avatar
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    Hi,purely from my experience,you should use old plugs,plugs that have some color to them.You will be amazed by how quickly they change color accocding to tuning changes made. It's the center electrode/porcelain you need to watch.Not sure of the post,Tan is good,white=lean,black=rich. I hope that helps

  3. #3
    Wankel till I die!! jonjonwells's Avatar
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    Stupid spark plugs. Just about the hardest thing to take a pic of. anywho

    I believe this is what you are talking about. I can't remember who started it, but I think it was Beer. They had stated that you could get a rough wash reading from your plugs. You still want to go by you plug coloring, but you can actually see a line on the side electrode. If my memory serves me right you want the "wash" line about the middle of the curve.

    Hopefully someone else can find the thread that had this info in it. Anyone???
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  4. #4
    Tony's Avatar
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    casey67 Yeah, I know about checking the center electrode for color. I was useing new plugs so I could check for a burn pattern on the grounding electrode, something thats hard to do on used plugs.

    jonjonwells I was thinking it was either beer or pho2craft but I'm not certain if it was either of them. I thought the original poster stated that this was actually a more accurate method of reading plugs. If the very end was "1" and the end closest to the threads was "10" I was getting somewhere between "6" and "7"...about halfway between the curve and the threads. I just don't remember if the original poster said you should be closer to the middle or closer to either end.

  5. #5
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    It was Ph20, but I can't find it anywhere using the search.

  6. #6

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    i say you need to take the domes off , the spark plugs are nothing to go off of unless your running extremly rich or have no compersion ,

  7. #7
    Connecticut CrazyA's Avatar
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    http://www.strappe.com/plugs.html




    .
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  8. #8
    Tony's Avatar
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    Quote Originally Posted by xlint89 View Post
    It was Ph20, but I can't find it anywhere using the search.
    I tried the search function too with no luck....maybe Ph20 will be along shortly to point me in the right direction.

    Quote Originally Posted by 97sltx1050 View Post
    i say you need to take the domes off , the spark plugs are nothing to go off of unless your running extremly rich or have no compersion ,
    Pulling the domes off while tuning out on the water isn't an option. I'm trying to tune with rpm and plug color, then I'll either use my wash light or pull the domes.

    Quote Originally Posted by CrazyA View Post
    Thanks for the link. In the attached thumbnail it says "Plating burned, on plug electrode. Hotter look to here-ok" I'm a little confused by that, maybe I can get some pics of my plugs later.
    Last edited by Tony; 10-07-2007 at 07:18 AM.

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