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DT125R FORUM

  1. Home
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  3. Power valve issue

Power valve issue

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  • J Jens Eskildsen

    A friend had a faulty servo, sometime during a ride where the PV was open, it would leave it open. Other times just seem erratic. I believe the gears in the servo was toast.

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    thechompster
    wrote on last edited by
    #18

    @jens-eskildsen ok thanks mate. Very helpfull
    Will try another servo then and see what happens.

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    • T thechompster

      @jens-eskildsen ok thanks mate. Very helpfull
      Will try another servo then and see what happens.

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      Mitch_350z
      wrote on last edited by
      #19

      @thechompster just out of interest, what spark plug are you running??

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      • M Mitch_350z

        @thechompster just out of interest, what spark plug are you running??

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        thechompster
        wrote on last edited by
        #20

        @mitch_350z iridium spark plug

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        • T thechompster

          @mitch_350z iridium spark plug

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          Mitch_350z
          wrote on last edited by
          #21

          @thechompster does it have the resistor in it the 'r' in the spark plug type as this can cause issues with the operation of the valve

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          • CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #22

            I've always ran br9eix on my bikes with no isses.

            I think that's the one at least.

            Always Originate, Never Pirate!

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            • M Mitch_350z

              @thechompster does it have the resistor in it the 'r' in the spark plug type as this can cause issues with the operation of the valve

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              thechompster
              wrote on last edited by thechompster
              #23

              @mitch_350z the one below. Br9eix.

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              • Irongamer727I Offline
                Irongamer727I Offline
                Irongamer727
                wrote on last edited by
                #24

                Me too, br9eix

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                • T thechompster

                  @mitch_350z the one below. Br9eix.

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                  Mitch_350z
                  wrote on last edited by
                  #25

                  @thechompster my mistake, I meant without the 'r' lol if it hasn't got the resistor in it the valve finds a mind of its own. You can hear the exhaust note change as you ride

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                  • M Mitch_350z

                    @thechompster my mistake, I meant without the 'r' lol if it hasn't got the resistor in it the valve finds a mind of its own. You can hear the exhaust note change as you ride

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                    thechompster
                    wrote on last edited by
                    #26

                    @mitch_350z I see. Where is the resister?

                    declanD 1 Reply Last reply
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                    • T thechompster

                      @mitch_350z I see. Where is the resister?

                      declanD Offline
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                      declan
                      wrote on last edited by
                      #27

                      @thechompster I believe itโ€™s built into the core of the plug

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                      • declanD declan

                        @thechompster I believe itโ€™s built into the core of the plug

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                        Mitch_350z
                        wrote on last edited by
                        #28

                        @declan yeah it is

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                        • T Offline
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                          thechompster
                          wrote on last edited by
                          #29

                          I guess it's ok as it ran great with the power valve working spot on for a few weeks. Just got a cdi off eBay and a servo so will try the cdi first and see if it fixes it.

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                            thechompster
                            wrote on last edited by
                            #30

                            Problem solved. It was the cdi unit. Changed that and it runs like a dream. Thought I'd let everyone know as sometimes people get it fixed and you never hear the outcome ๐Ÿ™‚

                            CalumC 1 Reply Last reply
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                            • T thechompster

                              Problem solved. It was the cdi unit. Changed that and it runs like a dream. Thought I'd let everyone know as sometimes people get it fixed and you never hear the outcome ๐Ÿ™‚

                              CalumC Offline
                              CalumC Offline
                              Calum
                              wrote on last edited by Calum
                              #31

                              @thechompster Glad you got it working bud, as I said previously, I guess these bikes are just getting to that age now unfortunately.

                              Always Originate, Never Pirate!

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                              • CalumC Calum

                                @thechompster Glad you got it working bud, as I said previously, I guess these bikes are just getting to that age now unfortunately.

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                                thechompster
                                wrote on last edited by
                                #32

                                @calum thanks. Yeah sad really. Won't be many around after another 10 years.

                                CalumC 1 Reply Last reply
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                                • T thechompster

                                  @calum thanks. Yeah sad really. Won't be many around after another 10 years.

                                  CalumC Offline
                                  CalumC Offline
                                  Calum
                                  wrote on last edited by
                                  #33

                                  @thechompster Zeeltronic make ignitions for these bikes so there is an aftermarket solution.

                                  Always Originate, Never Pirate!

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                                  • CalumC Calum

                                    @thechompster Zeeltronic make ignitions for these bikes so there is an aftermarket solution.

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                                    thechompster
                                    wrote on last edited by
                                    #34

                                    @calum that's good. Glad someone does ๐Ÿ™‚

                                    CalumC 1 Reply Last reply
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                                    • T thechompster

                                      @calum that's good. Glad someone does ๐Ÿ™‚

                                      CalumC Offline
                                      CalumC Offline
                                      Calum
                                      wrote on last edited by
                                      #35

                                      @thechompster And ignitech

                                      Always Originate, Never Pirate!

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