What is wrong with my plugs?

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  • April 12, 2019 at 10:59 am #173179
    john8504
    Participant

      Pic of the new stator

      13C5AE99-E3C9-4F51-8CD2-90A7B5278AFD

      • This reply was modified 6 years, 8 months ago by Mumbles.
      April 13, 2019 at 11:27 pm #173278
      john8504
      Participant

        Checked spark on my coils. I backed it out 3/4” and I still have great spark. Bottom cylinder not burning off correctly. I would think that if the halves of the case were worn then both cylinders would be bad.

        April 14, 2019 at 10:05 am #173316
        Tubs
        Participant

          A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

          April 14, 2019 at 7:20 pm #173392
          john8504
          Participant

            Found my problem. It was the type of plug. Switched to some Ngk racing plugs and runs like a champ!!

            A0D89A43-7C5B-4D25-94FA-4C94E3D98455

            • This reply was modified 6 years, 8 months ago by Mumbles.
            April 14, 2019 at 7:55 pm #173395
            Mumbles
            Participant
              john8504 wrote:

              Switched to some Ngk racing plugs and runs like a champ!!

              What did I tell you! 👍

              I’m not sure what you mean by ‘racing’ plugs but I feel off the shelf NGK plugs are superior to anything currently on the market. Others may think different but I’m convinced.

              April 14, 2019 at 11:58 pm #173412
              john8504
              Participant

                Yeah good call on that. I had several people convinced it was as in the electrical. Funny thing is that the other plug would jump 3/4 inch on spark testet

                April 15, 2019 at 5:49 am #173415
                billw
                Participant

                  US Member

                  Well, it WAS an electrical issue….just one that was so obvious that I forgot about it!!! Good call! A true “duh” moment, on my part! However, I do have to say that I have seen plenty of dead holes on Yamahas, caused by NGKs that were less than a year old. I am not arguing against them; but they, too, have their moments.

                  Long live American manufacturing!

                  April 15, 2019 at 10:07 am #173435
                  Mumbles
                  Participant

                    When purchasing NGK’s, they have to come from a reliable source to be genuine. Like most everything else, there are poor quality fakes out there which look convincing and are being sold online at places such s Epay so it is buyer beware. Doing a Google search for fake plugs will help to identify the phonies.

                    • This reply was modified 6 years, 8 months ago by Mumbles.
                    April 15, 2019 at 4:20 pm #173466
                    billw
                    Participant

                      US Member

                      I hope ours aren’t fakes. We buy them from a local wholesaler by the hundreds, probably thousands, come to think of it.

                      Long live American manufacturing!

                      April 16, 2019 at 8:34 am #173510
                      john8504
                      Participant

                        I got mine from the auto parts store. I’m fairly sure mine are fine. I run a auto repair shop, I deal with ngk plugs on a daily basis.

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