suzuki oil pump issue

Discussion in '2 smokers' started by Vintagewannabe, Jul 4, 2018.

  1. Vintagewannabe

    Vintagewannabe Adventurer

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    May 11, 2018
    Oddometer:
    80
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    I have a ts185 that I recently bought, and am having issues with the oil pump.
    I dont know if this was an existing issue before, but I removed the supply line to change it, changed the oil pump gasket, and now I cant get rid of air in one of the lines. If you are looking down on the engine, it is the line to the right. I have bled the pump, and pushed oil into the lines multiple times, but every time I start the bike, the line gets a ton of air, while the left one has none. I also pulled the line and it doesnt seem to have any breaks or leaks.
    what do I need to do? is my pump working properly? or am I doing something wrong?
    #1
  2. anotherguy

    anotherguy Long timer

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    Click me and contact the user named Arrow. He rebuilds two stroke oil pumps. Located in the UK but it's worth the expense. If a new oil pump is available they run in the $400 neighborhood.
    #2
  3. Vintagewannabe

    Vintagewannabe Adventurer

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    well the weird thing is that I rode the crap out of it before I got it home and noticed this
    #3
  4. anotherguy

    anotherguy Long timer

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    If it's not causing issues...if it ain't 'broke. If you have a manual there's probably a test for pump output in there.

    I installed clear yellow oil lines on my RZ350 and air bubbles were present most of the time yet no problems over the years. I took the term "ton of air" literally. Are we talking 1/4-1/2 inch gaps in flow? Post a photo if you can. Some air will always happen with a worm drive gravity fed pump. Nature of the beast. Does it smoke at start up? I think you're just now seeing something that's always been there but hidden from view.
    #4
  5. Vintagewannabe

    Vintagewannabe Adventurer

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    yeah, youre exactly right when you say ton of air. but I tried the trick where you spin up the pump to push oil through and got solid oil all through the lines, then when I started it, its back to the bubbles. and it smokes pretty good. I guess I'll take it for a ride and see what happens
    #5
  6. aptbldr

    aptbldr easy rider

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    Do you know the air bubbles come from the pump and not backwards from the left crank bearing?
    Could be the crank seals let air leak back up the oil line?
    #6
    spokester likes this.
  7. anotherguy

    anotherguy Long timer

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    I had forgotten Susuki's system is positive to the crank bearings. Since my experience with Suzuki's positive crankcase lubrication systems is virtually non-existant I'll have to pass on to someone with more knowledge.
    #7
  8. Jay_In_Milpitas

    Jay_In_Milpitas Zero to sixty in February

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    Oddometer:
    766
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    Milpitas, CA
    Yes, on the singles it's one oil line to the left crank main bearing (which feeds the rod big end via a catch disc) and one to the intake port to lube the piston skirt. The right side main bearing is lubed by trans oil.
    #8
  9. Vintagewannabe

    Vintagewannabe Adventurer

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    I pupled the cover off yet again and discovered that the fitting on the right side has a huge crack in it that was not there before. Does anyone know which one is line a and which is line b?
    #9