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DT125R FORUM

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  4. Oil Pump/Auto lube dramas

Oil Pump/Auto lube dramas

Scheduled Pinned Locked Moved Engine
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  • Irongamer727I Irongamer727

    @calum why would you ever need the coolant running through the carb. Never understood that myself.

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

    @irongamer727 it’s to stop it freezing up? I’ve never got it my self it seems stupid to me

    CalumC 1 Reply Last reply
    0
    • declanD declan

      @irongamer727 it’s to stop it freezing up? I’ve never got it my self it seems stupid to me

      CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #5

      @declan More likely to freeze if there is coolant inside it.

      It's probably to add some heat to the fuel to help it atomise better. Since four strokes atomise their fuel using high fuel pressure and probably an ultrasonic quartz crystal.

      Always Originate, Never Pirate!

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      • CalumC Calum

        The pumps are not refurbushable. A new pump will be required if this is the case.

        The oil line feeds directly into the inlet manifold not the carbuettor.

        The carburettor will accept coolant lines, so get those the wrong way round and....

        It's not uncommon for the pumps to fail, in which case the best advice I would give would be to simply run premix.

        SpannersS Offline
        SpannersS Offline
        Spanners
        wrote on last edited by
        #6

        @calum
        Thanks again!
        Seems strange a fragile part like this is unserviceable but l have managed to source a couple of units so l will check which works the best and replace the old one.
        Now this should really be one of the last fixes, l can wait to finish off and enjoy the fruits of my labour!
        And post a picture for you guys of course! πŸ˜‚πŸ‘

        1 Reply Last reply
        1
        • D Offline
          D Offline
          DTR+NSR
          wrote on last edited by
          #7

          The coolant feeds will be there to warm the carb to help prevent 'carb icing'.

          1 Reply Last reply
          0
          • O Offline
            O Offline
            oldman
            wrote on last edited by
            #8

            Have found a guy that can repair/refurb the oil pumps like new, has done 2 for me so far, let me know if you want his details.

            CalumC 1 Reply Last reply
            1
            • O oldman

              Have found a guy that can repair/refurb the oil pumps like new, has done 2 for me so far, let me know if you want his details.

              CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #9

              @oldman Yamaha told me they were non-serviceable. Interesting.

              Always Originate, Never Pirate!

              1 Reply Last reply
              0
              • O Offline
                O Offline
                oldman
                wrote on last edited by
                #10

                Found him via recommendation on dt mx site, did a 250 pump and also 89 dt I am currently doing, yamaha parts and seals supplied, will post photo shortly of 89 pump I have just got back

                1 Reply Last reply
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                • O Offline
                  O Offline
                  oldman
                  wrote on last edited by
                  #11

                  There you go
                  0_1510244237423_20171106_101323-1224x1632.jpg
                  0_1510244261554_20171106_101300-1224x1632.jpg

                  CalumC SpannersS 2 Replies Last reply
                  0
                  • O oldman

                    There you go
                    0_1510244237423_20171106_101323-1224x1632.jpg
                    0_1510244261554_20171106_101300-1224x1632.jpg

                    CalumC Offline
                    CalumC Offline
                    Calum
                    wrote on last edited by
                    #12

                    @oldman Looks superb

                    Always Originate, Never Pirate!

                    1 Reply Last reply
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                    • O oldman

                      There you go
                      0_1510244237423_20171106_101323-1224x1632.jpg
                      0_1510244261554_20171106_101300-1224x1632.jpg

                      SpannersS Offline
                      SpannersS Offline
                      Spanners
                      wrote on last edited by
                      #13

                      @oldman
                      Wow, the oil pump looks fantastic.
                      I would love to have the guys details, pre mixing seems quite prehistoric.
                      And l would love the engine working all correctly......darn these OCD’s! 😏

                      CalumC NINJAN 2 Replies Last reply
                      0
                      • O Offline
                        O Offline
                        oldman
                        wrote on last edited by
                        #14

                        Hi, his name is Gary and his email is morysjones@gmail.com, first class imho!

                        1 Reply Last reply
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                        • SpannersS Spanners

                          @oldman
                          Wow, the oil pump looks fantastic.
                          I would love to have the guys details, pre mixing seems quite prehistoric.
                          And l would love the engine working all correctly......darn these OCD’s! 😏

                          CalumC Offline
                          CalumC Offline
                          Calum
                          wrote on last edited by
                          #15

                          @spanners Nah man, OCD is good. Forums are OCD.

                          IMO, get it running spot on. It's worth it. But a lot of people tend to be short on cash, so I was merely offering a quick win.

                          Always Originate, Never Pirate!

                          1 Reply Last reply
                          0
                          • SpannersS Spanners

                            @oldman
                            Wow, the oil pump looks fantastic.
                            I would love to have the guys details, pre mixing seems quite prehistoric.
                            And l would love the engine working all correctly......darn these OCD’s! 😏

                            NINJAN Offline
                            NINJAN Offline
                            NINJA
                            wrote on last edited by
                            #16

                            @spanners We all have OCD in some way, shape or form bud. And there's absolutely nothing wrong with having a healthy obsession on/in something, it just proves that you have a soul and take great pride in creating something beautiful!!! πŸ˜‰

                            SEDUCED BY THE DARK SIDE!!!

                            1 Reply Last reply
                            0
                            • O Offline
                              O Offline
                              oldman
                              wrote on last edited by
                              #17

                              IMHO if it's there it should work, annoys me if it doesn't, keep thinking about it until I give in and correct it.

                              1 Reply Last reply
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                              • SpannersS Offline
                                SpannersS Offline
                                Spanners
                                wrote on last edited by Spanners
                                #18

                                Well guys I’m certainly in the right place with this forum.
                                @Calum I realise and understand your thinking, you always offer a way to still ride the bike to enjoy it. πŸ˜ƒ
                                I just want to get shot of the bodges, turned screw heads, snapped bolts and quick fixes.
                                @oldman thank you for the contact, I really appreciate it. I’m hoping both the pumps l got hold of work, then l can send one off to be refurbished.
                                @NINJA thank you for your kind words, l say great minds think alike...... and congregate in similar places!
                                I should be able to take it out this weekend, even my new rear fender for AJ Sutton has turned up, that has got to be good luck! πŸ€£πŸ‘

                                1 Reply Last reply
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