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DT125R FORUM

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  4. No spark!

No spark!

Scheduled Pinned Locked Moved Electrics
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  • NINJAN NINJA

    @declan Did you take any photo's of the bike pre/mid disassemble? If yes then refer back to them and look for any differences between the old & new installations.

    declanD Offline
    declanD Offline
    declan
    wrote on last edited by
    #8

    @NINJA the wires are colour coded and I marked every wire that was important to the starting and running of the engine

    declanD 2 Replies Last reply
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    • declanD declan

      @NINJA the wires are colour coded and I marked every wire that was important to the starting and running of the engine

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

      @declan so to rule out a few things, will the dt start without the ignition barrel,will the neutral circuit cause problems if the wire is not looped, would the clutch circuits also cause problems if it’s not looped

      1 Reply Last reply
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      • declanD declan

        @NINJA the wires are colour coded and I marked every wire that was important to the starting and running of the engine

        declanD Offline
        declanD Offline
        declan
        wrote on last edited by
        #10

        https://imgur.com/a/opX7k1M
        I found these wires wrapped up two of them are joined together I can’t remember if there were other joined like this, they come from the same loom as the battery wires

        declanD 1 Reply Last reply
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        • declanD declan

          https://imgur.com/a/opX7k1M
          I found these wires wrapped up two of them are joined together I can’t remember if there were other joined like this, they come from the same loom as the battery wires

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

          Okay, looks like the problem is the ignition coil when I remove the wire and kick the bike it shocks me yet when I connect it back up the plug still doesn’t spark I already have one on order so I’ll update when I’ve fitted it...(edit- by remove the wire I mean the direct feed from the cdi to the ignition

          NINJAN 1 Reply Last reply
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          • declanD declan

            Okay, looks like the problem is the ignition coil when I remove the wire and kick the bike it shocks me yet when I connect it back up the plug still doesn’t spark I already have one on order so I’ll update when I’ve fitted it...(edit- by remove the wire I mean the direct feed from the cdi to the ignition

            NINJAN Offline
            NINJAN Offline
            NINJA
            wrote on last edited by
            #12

            @declan Are there any breaks in the wire, which could be causing a short circuit???

            SEDUCED BY THE DARK SIDE!!!

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            • NINJAN NINJA

              @declan Are there any breaks in the wire, which could be causing a short circuit???

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

              @NINJA nope, just seems the coil went dead

              NINJAN 1 Reply Last reply
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              • declanD declan

                @NINJA nope, just seems the coil went dead

                NINJAN Offline
                NINJAN Offline
                NINJA
                wrote on last edited by
                #14

                @declan OK well hopefully a new coil will resolve the issue???

                SEDUCED BY THE DARK SIDE!!!

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                • NINJAN NINJA

                  @declan OK well hopefully a new coil will resolve the issue???

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

                  @NINJA it should do

                  1 Reply Last reply
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                  • NINJAN NINJA

                    @declan OK well hopefully a new coil will resolve the issue???

                    declanD Offline
                    declanD Offline
                    declan
                    wrote on last edited by
                    #16

                    @NINJA never that simple is it 😕 I have power before the coil but when connected up I get nothing

                    NINJAN 1 Reply Last reply
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                    • declanD declan

                      @NINJA never that simple is it 😕 I have power before the coil but when connected up I get nothing

                      NINJAN Offline
                      NINJAN Offline
                      NINJA
                      wrote on last edited by
                      #17

                      @declan Are you sure that the correct wires are connected to the right terminals bud???

                      SEDUCED BY THE DARK SIDE!!!

                      declanD 1 Reply Last reply
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                      • NINJAN NINJA

                        @declan Are you sure that the correct wires are connected to the right terminals bud???

                        declanD Offline
                        declanD Offline
                        declan
                        wrote on last edited by
                        #18

                        @NINJA yeah just as the original was, it will shock me every time but the second that power wire touches the ht terminal the power vanishes

                        NINJAN 1 Reply Last reply
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                        • declanD declan

                          @NINJA yeah just as the original was, it will shock me every time but the second that power wire touches the ht terminal the power vanishes

                          NINJAN Offline
                          NINJAN Offline
                          NINJA
                          wrote on last edited by
                          #19

                          @declan It sounds like you have a short somewhere else? Re-check all the wires as something is a miss.

                          SEDUCED BY THE DARK SIDE!!!

                          declanD 1 Reply Last reply
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                          • NINJAN NINJA

                            @declan It sounds like you have a short somewhere else? Re-check all the wires as something is a miss.

                            declanD Offline
                            declanD Offline
                            declan
                            wrote on last edited by
                            #20

                            @NINJA I can’t find anything wrong it doesent make any sense I could understand if it was weak power but no power at all is flowing through

                            NINJAN 1 Reply Last reply
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                            • declanD declan

                              @NINJA I can’t find anything wrong it doesent make any sense I could understand if it was weak power but no power at all is flowing through

                              NINJAN Offline
                              NINJAN Offline
                              NINJA
                              wrote on last edited by
                              #21

                              @declan Well something is causing the issue, try using a volt meter to check volt's & Amps etc

                              SEDUCED BY THE DARK SIDE!!!

                              declanD 1 Reply Last reply
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                              • NINJAN NINJA

                                @declan Well something is causing the issue, try using a volt meter to check volt's & Amps etc

                                declanD Offline
                                declanD Offline
                                declan
                                wrote on last edited by
                                #22

                                @NINJA how do I go about testing things I have my multimeter now

                                NINJAN 1 Reply Last reply
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                                • declanD declan

                                  @NINJA how do I go about testing things I have my multimeter now

                                  NINJAN Offline
                                  NINJAN Offline
                                  NINJA
                                  wrote on last edited by
                                  #23

                                  @declan Look in the Haynes/Owners manual there should be a list of voltages. You then just put one probe one each wire and check your readings against the ones listed.

                                  SEDUCED BY THE DARK SIDE!!!

                                  declanD 1 Reply Last reply
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                                  • NINJAN NINJA

                                    @declan Look in the Haynes/Owners manual there should be a list of voltages. You then just put one probe one each wire and check your readings against the ones listed.

                                    declanD Offline
                                    declanD Offline
                                    declan
                                    wrote on last edited by
                                    #24

                                    @NINJA hi, I have looked but I’m not familiar with wiring in general I don’t know which ones I’m supposed to be testing

                                    NINJAN 1 Reply Last reply
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                                    • declanD declan

                                      @NINJA hi, I have looked but I’m not familiar with wiring in general I don’t know which ones I’m supposed to be testing

                                      NINJAN Offline
                                      NINJAN Offline
                                      NINJA
                                      wrote on last edited by NINJA
                                      #25

                                      @declan The ones to the coil would be the first place I would look. Then check any other wires associated with the ignition system. I suspect that you have something either not connected correctly or an earth is failing? Scrape some paint off underneath the ground eyelets to ensure that you have a good earth, as a bad earth will cause a short circuit and give you problems. 😉

                                      SEDUCED BY THE DARK SIDE!!!

                                      1 Reply Last reply
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                                      • O Offline
                                        O Offline
                                        oldman
                                        wrote on last edited by
                                        #26

                                        From experience the earths are prone to fail on old looms, check continuity using your multimeter from various places. Have you unwrapped the loom around coil area? Definitely worth checking, look through my red bike posts and you will see I had to renew earth from that area. Earth cable oxidised internally and started intermittently failing and quickly failed altogether .

                                        declanD 1 Reply Last reply
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                                        • O oldman

                                          From experience the earths are prone to fail on old looms, check continuity using your multimeter from various places. Have you unwrapped the loom around coil area? Definitely worth checking, look through my red bike posts and you will see I had to renew earth from that area. Earth cable oxidised internally and started intermittently failing and quickly failed altogether .

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

                                          @oldman I figure it has to be the stator because when I hold the power wires coming from the stator I get a decent shock but when I do the same but on my 50cc the jolt is easily 4or 5 times more powerful

                                          NINJAN 1 Reply Last reply
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