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DT125R FORUM

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  3. Power valve issue

Power valve issue

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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
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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
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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.

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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.

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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??

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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!

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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

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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

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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
                                      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 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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                                        • 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
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