Engine Trouble Leaking fresh oil

Discussion in '2-Stroke Engines' started by SRPM, May 5, 2016.

  1. SRPM

    SRPM Member

    Rode my bike to work today. Got to work and noticed blue oil around the bottom of my jug and the case screw right below the exgaust. Anyone know what this might be from. I have a reed valve that had a spacer on it and I took it off. You can't really see it in the pic but here's one to show where I'm talking about.
     

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  2. RobH

    RobH Guest

    This is called blow by u should incorporate a pcv system
     
  3. SRPM

    SRPM Member

    What?
     
  4. butre

    butre Well-Known Member

    this is a 2 stroke.

    it's a gasket leak
     
  5. Pcv pressure control valve??
     
  6. 20160507_085753.jpg
    I get alot of leaking from xport thinking of just taking it off. Heres my question can i fix the good exhaust gaskets you know the ones that are metal coated in rubber with high temp rtv gasket maker?
     
  7. SRPM

    SRPM Member

    I have tried with no success my xports have always leaked oil just not fresh still blue/green oil leaking.
     
  8. SRPM

    SRPM Member

    Yah but which on? Top of case half gasket or base gasket. Or is fresh stuff making it out the exhaust?
     
  9. FurryOnTheInside

    FurryOnTheInside Active Member

    Replacing the base gasket is easy. I would do that and see if it stops the leak.
    If not then it's the case gasket. I would like to know how/if you can do that safely. Mine looks either badly cut or wrongly positioned.
     
  10. Its more of a black with tiny green in it but mostly black i know im running it a bit rich thats why it gots the tinge of green in it
     
  11. 45u

    45u Active Member

    Since the oil is up so high I would guess head gasket. I do not think the oil would be so high if it was a base gasket.
     
  12. FurryOnTheInside

    FurryOnTheInside Active Member

    Maybe you see something I don't. In the picture I see a damp looking area going from the base gasket to the case screw (at one o'clock position to the case screw that is beneath the exhaust manifold). I can't see anything else in the picture.
     
  13. FurryOnTheInside

    FurryOnTheInside Active Member

    My money is on base gasket. :p
     
  14. 45u

    45u Active Member

    Maybe I am looking at the wrong picture.
     
  15. SRPM

    SRPM Member

    They are not cut well from the factory, so they don't sit exactly right. Also when I was building my "do it your self" engine build I had to cut the top of the gasket off to get it to fit right because the gasket was one whole piece instead of the U shape that it really is.
     
  16. SRPM

    SRPM Member

    Correct. The leak is coming from the screw or some where near there. It is leaking so much it is making it up to the sixth cooling fin up from the base down the side of my reed valve all the to the back of the carb and almost all the way to the reed valve on clutch side. The base gasket seems to be completely dry on clutch side. Here's some more pics. Notice the "fresh" that im talking about and the "used" we are all used to seeing. PicsArt_05-07-05.08.45.jpg.jpg PicsArt_05-07-05.07.38.jpg.jpg 20160507_164612.jpg
     
  17. FurryOnTheInside

    FurryOnTheInside Active Member

    Weird.... I didn't know it was way up on the cylinder fins too. I'm sure you will find it.
    And my money is on the reed (but that's not real money). ;)
     
  18. SRPM

    SRPM Member

    Your money is on the reed??? What's that supposed to mean...
     
  19. FurryOnTheInside

    FurryOnTheInside Active Member

    I think the most visually obvious oil is o the fin.. Must surely have flowed forward along the cylinder cooling fin surface, from the interface of reed and cylinder.. Where you removed a spacer.
    Someone mentioned that the fuel/air mix has velocity and the reed snaps shut.
    It certainly can't be the head if it's unburnt fuel/oil.
    Just thoughts.
    If you clean it and run it, can you not see the fresh oil appear again?
     
  20. SRPM

    SRPM Member

    I haven't gotten the chance to clean it up and check for it. But I sealed the reed valve to the jug so I know it's not there it must be base or case gaskets I think. There is no way the "fresh" oil could make it out the exhaust, right?
     
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