Skip to content
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (Slate)
  • No Skin
Collapse
Brand Logo

DT125R FORUM

  1. Home
  2. Owners Build Threads
  3. DTRE
  4. Oil disappearing from sight glass

Oil disappearing from sight glass

Scheduled Pinned Locked Moved DTRE
14 Posts 4 Posters 1.2k Views
  • 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.
  • CalumC Calum

    @declan I mean, I don't know what to say. 200ml is a lot to lose in a couple of minutes. Are you sure that the glass isn't just not clear. I never use the sight glass. Just 750ml and forget about it.

    D Offline
    D Offline
    DTR+NSR
    wrote on last edited by
    #3

    May have miss understood, but are you checking the oil level with the engine running?

    declanD 2 Replies Last reply
    0
    • D DTR+NSR

      May have miss understood, but are you checking the oil level with the engine running?

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

      I measured my oil yesterday and I only got around 200ml out of my engine even though I filled it up to the sight glass then topped that up twice I've checked my crank seals no issues there my Water pump seal was pretty much gone but no oil in the rad I'm gonna try measuring my 750ml out and go from there when I install my pump seal if it disappears again the only thing left is the case halves aren't sealing and gearbox oil is leaking into the crank case but with the amount of oil missing you would think it would be a smoke show and spewing gunk out of every orafice but it doesent ,I'll keep you posted seal comes in Monday I think

      1 Reply Last reply
      0
      • D DTR+NSR

        May have miss understood, but are you checking the oil level with the engine running?

        declanD Offline
        declanD Offline
        declan
        wrote on last edited by declan
        #5

        @dtr-nsr no filled on a cold engine and left for a few days and the oil doesent return, I'm hoping that for whatever reason the oil is getting trapped in the clutch cover so it looks on the sight glass that my oil is full but when it runs the oil is going through to the rest of the engine this doesent make much sense though since the oil passage ways all look clear

        S 1 Reply Last reply
        0
        • declanD declan

          @dtr-nsr no filled on a cold engine and left for a few days and the oil doesent return, I'm hoping that for whatever reason the oil is getting trapped in the clutch cover so it looks on the sight glass that my oil is full but when it runs the oil is going through to the rest of the engine this doesent make much sense though since the oil passage ways all look clear

          S Offline
          S Offline
          SpookDog
          wrote on last edited by
          #6

          @declan
          Filled from cold and left 2 days, without running? If so it’s impossible for it to have gone into the crank. It would of hydro-locked the crank, and/or been impossible to start...
          Also are you saying you got only 200mls when you drained the oil?...

          CalumC declanD 2 Replies Last reply
          1
          • S SpookDog

            @declan
            Filled from cold and left 2 days, without running? If so it’s impossible for it to have gone into the crank. It would of hydro-locked the crank, and/or been impossible to start...
            Also are you saying you got only 200mls when you drained the oil?...

            CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #7

            @spookdog It wouldn't hydrolock, but I know what you're saying.

            Obviously on four strokes, the valves close and the fluid has nowhere to go. On a smoker it would come straight out the exhaust and make a right mess!

            Always Originate, Never Pirate!

            declanD 1 Reply Last reply
            0
            • CalumC Calum

              @spookdog It wouldn't hydrolock, but I know what you're saying.

              Obviously on four strokes, the valves close and the fluid has nowhere to go. On a smoker it would come straight out the exhaust and make a right mess!

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

              @calum I think i have sorted the "issue" I haven't ran the bike but I'm pretty confident I wasn't putting enough oil in I measured the new oil 750ml and about half way filling the engine the sight glass started to fill so before I would have stopped this time I didn't and kept going I'm assuming you are supposed to fill the engine with the measured amount run the engine then check the level on the sight glass and top up if necessary I've never ran into this on my dtr but I've always measured the oil for that
              engine

              1 Reply Last reply
              0
              • S SpookDog

                @declan
                Filled from cold and left 2 days, without running? If so it’s impossible for it to have gone into the crank. It would of hydro-locked the crank, and/or been impossible to start...
                Also are you saying you got only 200mls when you drained the oil?...

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

                @spookdog and no I were running the engine

                S 1 Reply Last reply
                0
                • declanD declan

                  @spookdog and no I were running the engine

                  S Offline
                  S Offline
                  SpookDog
                  wrote on last edited by
                  #10

                  @declan
                  You don’t even need to top up, the gear oil doesn’t get used up like a four stroke engine does. It has nowhere to go unless it’s leaking.
                  Just ‘fire & forget‘ 750ml into it 🙂 ...

                  declanD 1 Reply Last reply
                  1
                  • S SpookDog

                    @declan
                    You don’t even need to top up, the gear oil doesn’t get used up like a four stroke engine does. It has nowhere to go unless it’s leaking.
                    Just ‘fire & forget‘ 750ml into it 🙂 ...

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

                    @spookdog I know but depending on how much oil there is or isn't in the bottom end you may need to the manual calls for 800ml if you have rebuilt the engine so it depends what work you have done or how long it's sat without oil

                    CalumC 1 Reply Last reply
                    0
                    • declanD declan

                      @spookdog I know but depending on how much oil there is or isn't in the bottom end you may need to the manual calls for 800ml if you have rebuilt the engine so it depends what work you have done or how long it's sat without oil

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

                      @declan what 🤣

                      No just drain the engine oil. 750ml and then don't worry about it.

                      Can't say I have ever had a problem.

                      Always Originate, Never Pirate!

                      declanD 1 Reply Last reply
                      0
                      • CalumC Calum

                        @declan what 🤣

                        No just drain the engine oil. 750ml and then don't worry about it.

                        Can't say I have ever had a problem.

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

                        @calum that's what Haynes says 🤔 but anyways it should be good to go now

                        S 1 Reply Last reply
                        0
                        • declanD declan

                          @calum that's what Haynes says 🤔 but anyways it should be good to go now

                          S Offline
                          S Offline
                          SpookDog
                          wrote on last edited by
                          #14

                          @declan

                          I know, but the sight glass is problematic. I’ve seen posts where people thought the oil had disappeared but really had gone above the glass 🙂

                          If my gear change feels smooth, I’ve got oil 😜

                          1 Reply Last reply
                          0
                          Reply
                          • Reply as topic
                          Log in to reply
                          • Oldest to Newest
                          • Newest to Oldest
                          • Most Votes


                          • Login

                          • Don't have an account? Register

                          • Login or register to search.
                          • First post
                            Last post
                          0
                          • Recent
                          • Tags
                          • Popular
                          • Users
                          • Groups