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DT125R FORUM

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  4. Auto lube or premix

Auto lube or premix

Scheduled Pinned Locked Moved Engine
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  • H Offline
    H Offline
    HOBO4LIFE
    wrote on last edited by
    #1

    As title says, I am paranoid about oil pump failing etc., is it worth removing it?

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    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #2

      Depends how in tune with your bike you are.

      The fact the bike smokes should be the giveaway if the oil pump fails.

      It will also spike in temperature before it fails due to increased fiction. It will be down on performance and it will start to sound like there is sand in the engine. Of coursw by which time it will be too late and you would have to either premix there and then or push the bike home.

      My brother noticed the oil gears snap on his RS on a rideout once. He made it all the way home with no oil and the engine kept on going for years as soon as he fixed the broken gears.

      There should be sufficient oil in the engine to do the odd mile or too when it fails, bur don't expect to be doing any long distances.

      Always Originate, Never Pirate!

      H 1 Reply Last reply
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      • J Offline
        J Offline
        Jens Eskildsen
        wrote on last edited by
        #3

        They seem super reliable. I think more people have had troubles after removing them.

        I flog mine pretty good, and the autolube keeps up no problem.

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        • MiniaM Offline
          MiniaM Offline
          Minia
          wrote on last edited by
          #4

          Speaking honestly from my experience I've never had problems with my oil pump on the DTs, they work well. Just make sure you're topped up here and there as I've found my low-level oil indicator lies sometimes. And as Calum said just beware of any difference in the sound of the engine, it will heat up a lot more and your engine may start suffering from power-loss when you put your foot (or hand in this case) down.

          I've been riding Enduro a long time and to save weight they don't have oil pumps so you have to premix. The mixture will vary from bike to bike, normally it is about 2% for every 10 litres but to get it perfect it really is trial and error. Too much oil and the bike will smoke even after it has warmed up, if you see oil dripping from your muffler then you're putting in far too much. Too little and your bike will run a little too hot and it shouldn't sound too happy when you go over 25-30mph.

          You can pick whichever way to go, but if you plan filling up at petrol stations then the problem is you don't really know how much oil you need to put in and so can't be very precise. Although at the same time it shouldn't hurt much, and it won't hurt as much as your oil pump failing that is for sure.

          Yamaha DT125R Blue 2002, XT 125 1982, Yamaha WR250Z 1992, BMW GS650F 1994, Benelli BN302 2015

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          • CalumC Calum

            Depends how in tune with your bike you are.

            The fact the bike smokes should be the giveaway if the oil pump fails.

            It will also spike in temperature before it fails due to increased fiction. It will be down on performance and it will start to sound like there is sand in the engine. Of coursw by which time it will be too late and you would have to either premix there and then or push the bike home.

            My brother noticed the oil gears snap on his RS on a rideout once. He made it all the way home with no oil and the engine kept on going for years as soon as he fixed the broken gears.

            There should be sufficient oil in the engine to do the odd mile or too when it fails, bur don't expect to be doing any long distances.

            H Offline
            H Offline
            HOBO4LIFE
            wrote on last edited by
            #5

            @Calum What colour would the smoke be?

            CalumC 1 Reply Last reply
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            • H HOBO4LIFE

              @Calum What colour would the smoke be?

              CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #6

              @HOBO4LIFE Blue

              Always Originate, Never Pirate!

              H 1 Reply Last reply
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              • CalumC Calum

                @HOBO4LIFE Blue

                H Offline
                H Offline
                HOBO4LIFE
                wrote on last edited by
                #7

                @Calum I thought blue is too much oil.

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                • CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #8

                  Should see a blue haze from a two stroke, that's engine oil. Black will be transmission oil, or excessive fuel.

                  Always Originate, Never Pirate!

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