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DT125R FORUM

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  4. Water issue with the dt

Water issue with the dt

Scheduled Pinned Locked Moved Electrics
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  • declanD Offline
    declanD Offline
    declan
    wrote on last edited by declan
    #1

    So I think I made one of these posts a while ago my dt would stop working when I were off-roading if I hit any type of puddle wet grass was usually fine I went out in a storm last night and soon as my bike hit a puddle it died took a while to start up and when it did it barely ran wouldn’t idle I could ride it so long as I stayed at a constant rpm any sudden changes and it would just die as quick as turning the key I figured all these problems would be fixed since all of my new wiring and connections but obviously not the video linked is the day after bike is fairly dry in the video bike is warmed up.
    https://youtu.be/ga8a-MiFQCw

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    • Y Offline
      Y Offline
      yannikmeister
      wrote on last edited by
      #2

      I had a similar problem earlier this year. It behaved almost exactly like yours except it would do it in any weather. In my case it was faulty gearbox side crankshaft seals. You might have a look at your transmission oil and test if it smells like gas.

      declanD 1 Reply Last reply
      0
      • Y yannikmeister

        I had a similar problem earlier this year. It behaved almost exactly like yours except it would do it in any weather. In my case it was faulty gearbox side crankshaft seals. You might have a look at your transmission oil and test if it smells like gas.

        declanD Offline
        declanD Offline
        declan
        wrote on last edited by
        #3

        @yannikmeister well in all honesty my crank seals are probably due soon but it’s only water that causes this frustrating thing is there’s no obvious culprit

        declanD 1 Reply Last reply
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        • declanD declan

          @yannikmeister well in all honesty my crank seals are probably due soon but it’s only water that causes this frustrating thing is there’s no obvious culprit

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

          It looks like I’ve been getting water in my stator but doesent seem to be the issues I’ll put a new gasket on it all the same another weird thing when I lock my rpm around 3k so I can have a strong idle it will run for about 30s then just turn off not a splutter or fade out it will just switch off

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          • S Offline
            S Offline
            SpookDog
            wrote on last edited by
            #5

            I’d get a pump up spray bottle and squirt it down on a hot dry day. Start on the obvious ignition bits. Plug, coil, CDI. Try the sidestand switch as well maybe. My mate had probs with the sidestand/ignition relay as well. It would only start with the ignition switch off...

            The high rev thing is weird though. Have you looked at the plug straight after it dies? See if it’s wet? Specially if you been playing with the jets...

            declanD 1 Reply Last reply
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            • S SpookDog

              I’d get a pump up spray bottle and squirt it down on a hot dry day. Start on the obvious ignition bits. Plug, coil, CDI. Try the sidestand switch as well maybe. My mate had probs with the sidestand/ignition relay as well. It would only start with the ignition switch off...

              The high rev thing is weird though. Have you looked at the plug straight after it dies? See if it’s wet? Specially if you been playing with the jets...

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

              @SpookDog jetting is fine it runs well on dry days it’s completely dead at the moment fuel in the cylinder spark but no starting so I’ll strip it back down and go over everything yet again

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              • S Offline
                S Offline
                SpookDog
                wrote on last edited by SpookDog
                #7

                Is the strong Tickover a wet day or any day thing?
                Also you got a spark now but is it still wet where you are?
                It’s not always easy trying to fault find without the bike in front of you. I had a CDI fail on me once and that was (I was told) affected by temperature. If you warmed it up with a hairdryer it was supposed to make it work. It was an intermittent fault that I couldn’t pinpoint. Especially when there are two separate ‘symptoms ‘
                Let us know if there’s any other faults or things that come to mind...

                Also, what year is your bike? I’m wondering if it has the early stator with three coils. One for charging, one for lights and one for ignition...

                declanD 1 Reply Last reply
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                • S SpookDog

                  Is the strong Tickover a wet day or any day thing?
                  Also you got a spark now but is it still wet where you are?
                  It’s not always easy trying to fault find without the bike in front of you. I had a CDI fail on me once and that was (I was told) affected by temperature. If you warmed it up with a hairdryer it was supposed to make it work. It was an intermittent fault that I couldn’t pinpoint. Especially when there are two separate ‘symptoms ‘
                  Let us know if there’s any other faults or things that come to mind...

                  Also, what year is your bike? I’m wondering if it has the early stator with three coils. One for charging, one for lights and one for ignition...

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

                  @SpookDog it’s the early stator if I remember right and it runs great all weathers I can jet wash it and it will be fine it’s just riding in puddles I’m not splashing them it’s just as soon as I touch them the bike either dies or tries to

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                  • S Offline
                    S Offline
                    SpookDog
                    wrote on last edited by SpookDog
                    #9

                    That can’t be right. It’s just too weird...
                    You need to try and recreate the fault. Make your own puddle. Have the bike running and slowly(without splashing) push it in and see what happens. Don’t forget the tires chuck up a line of spray in the wet. Straight up at the front of the engine and under the tank area. That would be my first guess...
                    If it’s like you say though, maybe it’s a weird earth problem. Doesn’t make any sense though...
                    How much did the loom cost? I’ve only seen silly prices for used ones. £150+!

                    With the stator I was gonna suggest changing the ignition coil, it’s not easy. Needs soldering I think. I’ve got one from an old stator that I know was working that you can have...

                    declanD 1 Reply Last reply
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                    • S SpookDog

                      That can’t be right. It’s just too weird...
                      You need to try and recreate the fault. Make your own puddle. Have the bike running and slowly(without splashing) push it in and see what happens. Don’t forget the tires chuck up a line of spray in the wet. Straight up at the front of the engine and under the tank area. That would be my first guess...
                      If it’s like you say though, maybe it’s a weird earth problem. Doesn’t make any sense though...
                      How much did the loom cost? I’ve only seen silly prices for used ones. £150+!

                      With the stator I was gonna suggest changing the ignition coil, it’s not easy. Needs soldering I think. I’ve got one from an old stator that I know was working that you can have...

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

                      @SpookDog thanks for the offer but I tested the stator a while back @oldman actually gifted it me the bike still won’t start so I’ll keep you posted when I can get it running then go about wetting things the loom is the original although it was hacked to bits the worst I’ve seen I put new connections on everything all the connections will be tested in due time

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                      • S Offline
                        S Offline
                        SpookDog
                        wrote on last edited by
                        #11

                        I forgot to say. Have you checked where the magnetic pick up wires come out of the stator? These can become ‘detatched’ from the rubber grommet, leaving two nice bare wires that can touch or arc...

                        declanD 1 Reply Last reply
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                        • S SpookDog

                          I forgot to say. Have you checked where the magnetic pick up wires come out of the stator? These can become ‘detatched’ from the rubber grommet, leaving two nice bare wires that can touch or arc...

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

                          @SpookDog for the pulse coil?

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                          • S Offline
                            S Offline
                            SpookDog
                            wrote on last edited by
                            #13

                            Yeah, where the rubber grommets at

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                            • declanD Offline
                              declanD Offline
                              declan
                              wrote on last edited by
                              #14

                              This is kind of off topic but included the same hardware so I'll ask when connecting up the cdi what's the minimum amount of wires you can have plugged in I did the two pulse coil wires and the two primary coil wires but there wasn't spark on my spare engine

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                              • S Offline
                                S Offline
                                SpookDog
                                wrote on last edited by SpookDog
                                #15

                                I’d think it would need them all plugged in. Power from the ignition coil has to get in from the stator. You have got the older 3 coil stators?
                                It’d need to be plugged into the loom. I won’t spark out of the frame. Are you trying to get it to spark ‘on the bench’?

                                declanD 1 Reply Last reply
                                0
                                • S SpookDog

                                  I’d think it would need them all plugged in. Power from the ignition coil has to get in from the stator. You have got the older 3 coil stators?
                                  It’d need to be plugged into the loom. I won’t spark out of the frame. Are you trying to get it to spark ‘on the bench’?

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

                                  @SpookDog I have a bike I'm building with an 05 dtx engine I'm trying to do a crossover of parts the bike has spark with it's cdi but won't fire so I would like to try my dtr cdi on it last time I did so I couldn't get a spark since my dtr needs to be stripped down I figure nows a good time to try again

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