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DT125R FORUM

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  4. 3rd piston ring please help

3rd piston ring please help

Scheduled Pinned Locked Moved Engine
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  • CalumC Online
    CalumC Online
    Calum
    wrote on last edited by
    #3

    I have never bothered to install them.

    It really depends on the tolerances. It wouldn't pull in any gear if it was that much of an issje.

    Always Originate, Never Pirate!

    declanD 1 Reply Last reply
    0
    • CalumC Calum

      I have never bothered to install them.

      It really depends on the tolerances. It wouldn't pull in any gear if it was that much of an issje.

      declanD Offline
      declanD Offline
      declan
      wrote on last edited by
      #4

      @calum it's just really strange does my head in thanks for your time mate

      1 Reply Last reply
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      • CalumC Online
        CalumC Online
        Calum
        wrote on last edited by
        #5

        Something isn't right if you are losing compression mate.

        Are you sure this is what is happening?

        Always Originate, Never Pirate!

        declanD 1 Reply Last reply
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        • CalumC Calum

          Something isn't right if you are losing compression mate.

          Are you sure this is what is happening?

          declanD Offline
          declanD Offline
          declan
          wrote on last edited by
          #6

          @calum not at all I've got it down to either fueling under load or weak spark under load as on the garden it's okay but if I take it out and select 2nd the bike comes to a stop at the end of the gear then after that it starts running weird like a splutter withough the noise if you know what I mean then I have to push it as it won't ride at all but will still run and rev

          ZrakoZ 1 Reply Last reply
          1
          • declanD declan

            @calum not at all I've got it down to either fueling under load or weak spark under load as on the garden it's okay but if I take it out and select 2nd the bike comes to a stop at the end of the gear then after that it starts running weird like a splutter withough the noise if you know what I mean then I have to push it as it won't ride at all but will still run and rev

            ZrakoZ Offline
            ZrakoZ Offline
            Zrako
            wrote on last edited by
            #7

            @declan well , is your clutch set up properly? I mean the tension .

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

            CalumC 1 Reply Last reply
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            • ZrakoZ Zrako

              @declan well , is your clutch set up properly? I mean the tension .

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

              @zrako yeah, if it's losing power under load then it sounds like clutch is slipping.

              Always Originate, Never Pirate!

              declanD 1 Reply Last reply
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              • CalumC Calum

                @zrako yeah, if it's losing power under load then it sounds like clutch is slipping.

                declanD Offline
                declanD Offline
                declan
                wrote on last edited by
                #9

                @calum the clutch was in a bad state but since I got a new lever and adjuster it will pop the front wheel up but it's losing the power after initially using the clutch it feels good but after then it's losing power I don't believe it to be the clutch but I really thought it was till I got a new lever the other day before that I could redline drop the clutch and barely move

                ZrakoZ 1 Reply Last reply
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                • declanD declan

                  @calum the clutch was in a bad state but since I got a new lever and adjuster it will pop the front wheel up but it's losing the power after initially using the clutch it feels good but after then it's losing power I don't believe it to be the clutch but I really thought it was till I got a new lever the other day before that I could redline drop the clutch and barely move

                  ZrakoZ Offline
                  ZrakoZ Offline
                  Zrako
                  wrote on last edited by
                  #10

                  @declan is there plenty of free play on the lever?

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

                  declanD 1 Reply Last reply
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                  • ZrakoZ Zrako

                    @declan is there plenty of free play on the lever?

                    declanD Offline
                    declanD Offline
                    declan
                    wrote on last edited by
                    #11

                    @zrako yes mate

                    1 Reply Last reply
                    0
                    • CalumC Online
                      CalumC Online
                      Calum
                      wrote on last edited by
                      #12

                      Yeah but the load on the clutch in 1st is going to be minimal.

                      Always Originate, Never Pirate!

                      declanD 1 Reply Last reply
                      0
                      • CalumC Calum

                        Yeah but the load on the clutch in 1st is going to be minimal.

                        declanD Offline
                        declanD Offline
                        declan
                        wrote on last edited by
                        #13

                        @calum so what would you lean to will bad plates have this effect?

                        CalumC 1 Reply Last reply
                        0
                        • declanD declan

                          @calum so what would you lean to will bad plates have this effect?

                          CalumC Online
                          CalumC Online
                          Calum
                          wrote on last edited by
                          #14

                          @declan Wouldn't be a bad place to start.

                          An idea would be to see if it pulls fine with no load on the engine.

                          So first just put the bike on a paddock, start it and go through all the gears. If that works no problems then jump on bike and od the same but keep it part throttle only. No load.

                          Always Originate, Never Pirate!

                          declanD 1 Reply Last reply
                          0
                          • CalumC Calum

                            @declan Wouldn't be a bad place to start.

                            An idea would be to see if it pulls fine with no load on the engine.

                            So first just put the bike on a paddock, start it and go through all the gears. If that works no problems then jump on bike and od the same but keep it part throttle only. No load.

                            declanD Offline
                            declanD Offline
                            declan
                            wrote on last edited by
                            #15

                            @calum I've tried it with no load it works pretty much as it should

                            CalumC 1 Reply Last reply
                            0
                            • declanD declan

                              @calum I've tried it with no load it works pretty much as it should

                              CalumC Online
                              CalumC Online
                              Calum
                              wrote on last edited by
                              #16

                              @declan With load on the engine does it revs hard and no power. Clutch is slipping then.

                              Either adjust it or replace it.

                              Always Originate, Never Pirate!

                              declanD 1 Reply Last reply
                              0
                              • CalumC Calum

                                @declan With load on the engine does it revs hard and no power. Clutch is slipping then.

                                Either adjust it or replace it.

                                declanD Offline
                                declanD Offline
                                declan
                                wrote on last edited by
                                #17

                                @calum no it lacks power off the line when moving its decent shift into 3rd the revs die down to a slow idle and you go about 3mph

                                CalumC 2 Replies Last reply
                                0
                                • declanD declan

                                  @calum no it lacks power off the line when moving its decent shift into 3rd the revs die down to a slow idle and you go about 3mph

                                  CalumC Online
                                  CalumC Online
                                  Calum
                                  wrote on last edited by
                                  #18

                                  @declan Nah doesn't sound like clutch then.

                                  Sounds like it's a carb setting.

                                  Take the plug out and have a look.

                                  Could simply just not getting enough fuel.

                                  Always Originate, Never Pirate!

                                  declanD 1 Reply Last reply
                                  0
                                  • CalumC Calum

                                    @declan Nah doesn't sound like clutch then.

                                    Sounds like it's a carb setting.

                                    Take the plug out and have a look.

                                    Could simply just not getting enough fuel.

                                    declanD Offline
                                    declanD Offline
                                    declan
                                    wrote on last edited by
                                    #19

                                    @calum that's what I'm thinking as after I try hit 3rd and stop it feels starved not revving clean and real slow idle but sorts it's self out after a rest I've been doing some tests as it's got an open filter not the box as I have no rubber or filter for the air box but I haven noticed anything by restricting air flow

                                    1 Reply Last reply
                                    0
                                    • declanD declan

                                      @calum no it lacks power off the line when moving its decent shift into 3rd the revs die down to a slow idle and you go about 3mph

                                      CalumC Online
                                      CalumC Online
                                      Calum
                                      wrote on last edited by
                                      #20

                                      @declan Sounds like fueling to me mate.

                                      Always Originate, Never Pirate!

                                      declanD 1 Reply Last reply
                                      0
                                      • CalumC Calum

                                        @declan Sounds like fueling to me mate.

                                        declanD Offline
                                        declanD Offline
                                        declan
                                        wrote on last edited by
                                        #21

                                        @calum I'll pick up a new carb and see how it goes thank you

                                        CalumC 1 Reply Last reply
                                        0
                                        • declanD declan

                                          @calum I'll pick up a new carb and see how it goes thank you

                                          CalumC Online
                                          CalumC Online
                                          Calum
                                          wrote on last edited by
                                          #22

                                          @declan Just sort heone you got outmate.

                                          Always Originate, Never Pirate!

                                          declanD 1 Reply Last reply
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