Navigation

    DT125R FORUM

    • Register
    • Login
    • Search
    • Recent
    • Tags
    • Popular
    • Users
    • Groups

    Tiny coolant leak.

    Engine
    4
    12
    629
    Loading More Posts
    • 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.
    • Sgt Robuck 5
      Sgt Robuck 5 last edited by

      I have a tiny coolant leak after replacing my clutch. I can’t seem to find where it’s coming from. It seems to run down the side stand and under the left hand side of the frame any ideas would be grand. Doesn’t seem to be coming from the gasket or water pump housing.

      1 Reply Last reply Reply Quote 0
      • Glynn123
        Glynn123 last edited by

        Sounds like where my overflow hose goes to from the expansion bottle, is expansion bottle full? If not are hoses running to it loose?

        Sgt Robuck 5 1 Reply Last reply Reply Quote 0
        • Sgt Robuck 5
          Sgt Robuck 5 @Glynn123 last edited by

          @glynn123 I'll have a check of the hoses. i've been topping it up so that it doesn't run low on coolant.

          Glynn123 1 Reply Last reply Reply Quote 0
          • Glynn123
            Glynn123 @Sgt Robuck 5 last edited by

            @sgt-robuck-5 likely just spitting it out since its overfilled, fill the radiator up but have the expansion bottle with just a bit in the bottom, one it's hot the level will rise and should sit between the markings

            Sgt Robuck 5 1 Reply Last reply Reply Quote 0
            • Sgt Robuck 5
              Sgt Robuck 5 @Glynn123 last edited by

              @glynn123 oh really? so me putting to much in could be the problem! makes sense i'll leave it for a little while and see how it goes

              1 Reply Last reply Reply Quote 0
              • Sgt Robuck 5
                Sgt Robuck 5 last edited by

                As you can see it's all over the kickstand but it isn't wet on the upper levels of the frame...I also removed the expansion tank side panel and it didn't seem to have any signs of water or dampness

                declan 1 Reply Last reply Reply Quote 0
                • declan
                  declan @Sgt Robuck 5 last edited by

                  @sgt-robuck-5 mine used to leak under the seat and that would easily run down the frame to the kickstand

                  1 Reply Last reply Reply Quote 0
                  • Sgt Robuck 5
                    Sgt Robuck 5 last edited by

                    Found out for sure that it was the coolant overflow. Used a cooling system pressure tester and the overflow pipe on the expansion tank sends it through the frame and out the bottom towards the kickstand and further underneath the frame. Didn’t realise the coolant was dumped through the frame.

                    Irongamer727 1 Reply Last reply Reply Quote 0
                    • Irongamer727
                      Irongamer727 @Sgt Robuck 5 last edited by

                      @sgt-robuck-5 someone has forgot to bleed the cooling system I see

                      Sgt Robuck 5 1 Reply Last reply Reply Quote 1
                      • Sgt Robuck 5
                        Sgt Robuck 5 @Irongamer727 last edited by

                        @irongamer727 wouldn’t all the trapped air go out The expansion tank when the engine has been left running and then it would suck the coolant from the expansion tank in?

                        Irongamer727 1 Reply Last reply Reply Quote 0
                        • Glynn123
                          Glynn123 last edited by

                          Mine seems to overflow out the left of the frame along side carb, as when the headgasket went a couple weeks ago it sprayed hot coolant all down my leg 😂

                          1 Reply Last reply Reply Quote 1
                          • Irongamer727
                            Irongamer727 @Sgt Robuck 5 last edited by

                            @sgt-robuck-5 doesn't work like that. Air pushes coolant up in the expansion tank filling it and then spits out on the road. Then returns to normal once cool. Just open the radiator cap and bleed it, problem solved.

                            1 Reply Last reply Reply Quote 1
                            • First post
                              Last post