Skip to content
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (Slate)
  • No Skin
Collapse
Brand Logo

DT125R FORUM

  1. Home
  2. Technical Zone
  3. Engine
  4. Power valve

Power valve

Scheduled Pinned Locked Moved Engine
31 Posts 11 Posters 9.0k Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • D Offline
    D Offline
    dan28
    wrote on last edited by
    #7

    I would try it with the servo when it's pinned there is no power at low revs
    Perhaps it's unplugged for a reason I would take the pv out an clean it toke sure it's not sticking then connect the servo up an try it

    1 Reply Last reply
    0
    • V vtrn_raptor

      So keeping it pinned is better

      CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #8

      @vtrn_raptor Jeez I really messed that up. Sorry no, Servo all the way.

      Don't pin use the servo. I don't know why I said pinned sorry.

      Servo is much better.

      Always Originate, Never Pirate!

      1 Reply Last reply
      2
      • J Offline
        J Offline
        Jens Eskildsen
        wrote on last edited by
        #9

        Servo for sure, best of both worlds.

        1 Reply Last reply
        1
        • V Offline
          V Offline
          vtrn_raptor
          wrote on last edited by
          #10

          I would but I have no idea how it's been pinned took off the cover on the left side and all the cables to the pulley are still connected so I'm really confused lol

          MightymanM 1 Reply Last reply
          0
          • V vtrn_raptor

            I would but I have no idea how it's been pinned took off the cover on the left side and all the cables to the pulley are still connected so I'm really confused lol

            MightymanM Offline
            MightymanM Offline
            Mightyman
            wrote on last edited by
            #11

            @vtrn_raptor can you hear it trying to do it's cycle when you turn your bikes ignition on?

            TDR 125 - 2001

            1 Reply Last reply
            0
            • V Offline
              V Offline
              vtrn_raptor
              wrote on last edited by
              #12

              Not sure I'll check when I'll plug it all in and check when I'm home

              1 Reply Last reply
              0
              • CallumJ94C Offline
                CallumJ94C Offline
                CallumJ94
                wrote on last edited by
                #13

                Sorry to butt in the thread, but has anyone got any idea why... when I connected up a working servo to the plugs it was completely dead? No cleaning cycle whatsoever, cables not connected so no load on it. Just not working at all. What's the most likely causes? Could it be a CDI issue? (03 DTR) I want to put a servo on desperately. Cheers.

                1 Reply Last reply
                0
                • CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #14

                  Yeah motor can be dead, or faulty cdi.

                  Multi meter on the plugs will tell you.

                  Always Originate, Never Pirate!

                  1 Reply Last reply
                  0
                  • F finnerz89

                    Mine was pinned when i bought the bike, reinstating the servo etc made a huge difference for me

                    ijohney123I Offline
                    ijohney123I Offline
                    ijohney123
                    wrote on last edited by
                    #15

                    @finnerz89 how did you manage to wire servo up pal

                    F 1 Reply Last reply
                    0
                    • ZrakoZ Offline
                      ZrakoZ Offline
                      Zrako
                      wrote on last edited by
                      #16

                      Or overtightened servo tensioners . I was setting them on and if they are not set properly , the servo will not reset when ignition turned on

                      1979 Jawa Mustang 50
                      2003 Gilera DNA 125 R.I.P
                      2015 Keeway TX 125 SM
                      2006 Yamaha DT 125 X

                      ijohney123I 1 Reply Last reply
                      0
                      • ZrakoZ Zrako

                        Or overtightened servo tensioners . I was setting them on and if they are not set properly , the servo will not reset when ignition turned on

                        ijohney123I Offline
                        ijohney123I Offline
                        ijohney123
                        wrote on last edited by
                        #17

                        @Zrako have you not had to rewire servo ?

                        1 Reply Last reply
                        0
                        • ijohney123I ijohney123

                          @finnerz89 how did you manage to wire servo up pal

                          F Offline
                          F Offline
                          finnerz89
                          wrote on last edited by
                          #18

                          @ijohney123 just plug and play mate. My servo was unplugged with the cables overtightened so the pulley didn't move

                          Current bikes:
                          DT125X '07
                          Street Triple R '11
                          Aprilia ETV1000 '02

                          Previous:
                          DR650RSE '96
                          FJ1200 '92

                          1 Reply Last reply
                          0
                          • ZrakoZ Offline
                            ZrakoZ Offline
                            Zrako
                            wrote on last edited by
                            #19

                            No , I had a good conectors on bike so when Im rebuilt it was just plug out - plug in . Try to loose the tensioners a bit . There is a "how to" in haynes manual 0_1492858857458_14928588372441878779145.jpg

                            1979 Jawa Mustang 50
                            2003 Gilera DNA 125 R.I.P
                            2015 Keeway TX 125 SM
                            2006 Yamaha DT 125 X

                            1 Reply Last reply
                            0
                            • V Offline
                              V Offline
                              vtrn_raptor
                              wrote on last edited by
                              #20

                              Well I've took the servo and everything off made sure wasn't over tight then plugged back it but does the cleaning cycle really fast and doesn't move at all with the bike on any ideas

                              F 1 Reply Last reply
                              0
                              • V vtrn_raptor

                                Well I've took the servo and everything off made sure wasn't over tight then plugged back it but does the cleaning cycle really fast and doesn't move at all with the bike on any ideas

                                F Offline
                                F Offline
                                finnerz89
                                wrote on last edited by
                                #21

                                @vtrn_raptor it won't move until you start to rev the bike mate. I think it starts to open up around 6000rpm

                                Current bikes:
                                DT125X '07
                                Street Triple R '11
                                Aprilia ETV1000 '02

                                Previous:
                                DR650RSE '96
                                FJ1200 '92

                                1 Reply Last reply
                                0
                                • ijohney123I Offline
                                  ijohney123I Offline
                                  ijohney123
                                  wrote on last edited by
                                  #22

                                  How manys wires is your servo

                                  1 Reply Last reply
                                  0
                                  • V Offline
                                    V Offline
                                    vtrn_raptor
                                    wrote on last edited by
                                    #23

                                    5 wires mate and it didn't budge at all even up to 7k

                                    ijohney123I CalumC 2 Replies Last reply
                                    0
                                    • V vtrn_raptor

                                      5 wires mate and it didn't budge at all even up to 7k

                                      ijohney123I Offline
                                      ijohney123I Offline
                                      ijohney123
                                      wrote on last edited by
                                      #24

                                      @vtrn_raptor servo dodgy ?
                                      Do u have another cdi unit on yours to control it.?

                                      1 Reply Last reply
                                      0
                                      • V Offline
                                        V Offline
                                        vtrn_raptor
                                        wrote on last edited by
                                        #25

                                        Yeah it's all connected to the cdi I've ordered a new servo see if that helps if not then it's the cdi

                                        1 Reply Last reply
                                        0
                                        • V vtrn_raptor

                                          5 wires mate and it didn't budge at all even up to 7k

                                          CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by
                                          #26

                                          @vtrn_raptor Yeah it won't, I don't think it does at all in neutral.

                                          It's easy to tell if the servo is operated as it will pull right through the rev range.

                                          Always Originate, Never Pirate!

                                          1 Reply Last reply
                                          0
                                          Reply
                                          • Reply as topic
                                          Log in to reply
                                          • Oldest to Newest
                                          • Newest to Oldest
                                          • Most Votes


                                          • Login

                                          • Don't have an account? Register

                                          • Login or register to search.
                                          • First post
                                            Last post
                                          0
                                          • Recent
                                          • Tags
                                          • Popular
                                          • Users
                                          • Groups