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DT125R FORUM

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  3. Power valve issue

Power valve issue

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  • T Offline
    T Offline
    thechompster
    wrote on last edited by
    #14

    Took the exhaust off. A bit dirty in there but rotates easy enough. Goes through the cleaning process nice and easy so all I can do now is change the servo and hope it sorts it.

    1 Reply Last reply
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    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #15

      Odd that it'll do the cleaning cycle fine but not run right.

      I'd be more inclined to say faulty CDI more than anything. I guess these bikes are just starting to show their age.

      Always Originate, Never Pirate!

      T 1 Reply Last reply
      0
      • CalumC Calum

        Odd that it'll do the cleaning cycle fine but not run right.

        I'd be more inclined to say faulty CDI more than anything. I guess these bikes are just starting to show their age.

        T Offline
        T Offline
        thechompster
        wrote on last edited by
        #16

        @calum yeah I guess they are.apart from that it runs lovely. Will change the servo. If that doesn't do it just the cdi left I guess.

        1 Reply Last reply
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        • J Offline
          J Offline
          Jens Eskildsen
          wrote on last edited by
          #17

          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.

          T 1 Reply Last reply
          0
          • 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.

            T Offline
            T Offline
            thechompster
            wrote on last edited by
            #18

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

            M 1 Reply Last reply
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            • T thechompster

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

              M Offline
              M Offline
              Mitch_350z
              wrote on last edited by
              #19

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

              T 1 Reply Last reply
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              • M Mitch_350z

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

                T Offline
                T Offline
                thechompster
                wrote on last edited by
                #20

                @mitch_350z iridium spark plug

                M 1 Reply Last reply
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                • T thechompster

                  @mitch_350z iridium spark plug

                  M Offline
                  M Offline
                  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

                  T 1 Reply Last reply
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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!

                    1 Reply Last reply
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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

                      T Offline
                      T Offline
                      thechompster
                      wrote on last edited by thechompster
                      #23

                      @mitch_350z the one below. Br9eix.

                      M 1 Reply Last reply
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                      • Irongamer727I Offline
                        Irongamer727I Offline
                        Irongamer727
                        wrote on last edited by
                        #24

                        Me too, br9eix

                        1 Reply Last reply
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                        • T thechompster

                          @mitch_350z the one below. Br9eix.

                          M Offline
                          M Offline
                          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

                          T 1 Reply Last reply
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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

                            T Offline
                            T Offline
                            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
                              declanD Offline
                              declan
                              wrote on last edited by
                              #27

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

                              M 1 Reply Last reply
                              0
                              • declanD declan

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

                                M Offline
                                M Offline
                                Mitch_350z
                                wrote on last edited by
                                #28

                                @declan yeah it is

                                1 Reply Last reply
                                0
                                • T Offline
                                  T Offline
                                  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.

                                  1 Reply Last reply
                                  0
                                  • T Offline
                                    T Offline
                                    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
                                    3
                                    • 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!

                                      T 1 Reply Last reply
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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.

                                        T Offline
                                        T Offline
                                        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
                                        0
                                        • 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!

                                          T 1 Reply Last reply
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