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DT125R FORUM

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  3. Power valve issue

Power valve issue

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  • T thechompster

    @calum ok thanks for the help. With give it a go.

    declanD Offline
    declanD Offline
    declan
    wrote on last edited by
    #12

    @BraDT thats how you take it apart bud

    B 1 Reply Last reply
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    • declanD declan

      @BraDT thats how you take it apart bud

      B Offline
      B Offline
      BraDT
      wrote on last edited by
      #13

      @declan cheers mate πŸ‘ŒπŸ»

      1 Reply Last reply
      1
      • 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!

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          • 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
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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.

                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 it’s built into the core of the plug

                                  M 1 Reply Last reply
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                                  • declanD declan

                                    @thechompster I believe it’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
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                                    • 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
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                                      • 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 πŸ™‚

                                        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 πŸ™‚

                                          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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