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Gas leaking from the right carb only

Discussion in 'The Garage' started by Chris1648, Jun 6, 2019.

  1. Chris1648

    Chris1648 XS650 Enthusiast

    does anyone know why this might be happening? Just finished a top end rebuild and had it fired up and running great, then the engine seemed to bog down and the right carb started dripping gas. Not sure what the problem is. CE66C891-2134-4E26-9F2C-DEE239E8B9F0.jpeg
     
  2. peanut

    peanut XS650 enthusiast & inveterate tinkerer Top Contributor XS650.com Supporter

    yes its your float needle letting by .;)

    Usually due to incorrect float height, leaking floats , sticky float pivots , worn float needle tip, etc Its worth fitting new Viton tipped float needles whenever carbs are stripped and cleaned.

    Often the float Tang is set at an acute angle to achieve correct float height but that causes the float needle to be forced to one side of the chamber and the resultant friction prevents correct sealing occasionally.

    Another factor could be that the floats are at different heights. Always need to check that both both floats are correct height
    This video might be helpful.
     
    TwoManyXS1Bs likes this.
  3. gggGary

    gggGary Stop that! Top Contributor XS650.com Supporter

    Do a float leak test also.
    Cup of steaming hot water,with a pair of pliers, a quick dip, bubbles = fail. Well over half of old floats fail this test.
     
    Grimmith and peanut like this.
  4. Chris1648

    Chris1648 XS650 Enthusiast

    Thank you. I will check these things.
     
  5. XSLeo

    XSLeo XS650 Guru Top Contributor

    Have you done a carb cleaning yet? I just ask because when doing a good cleaning you can inspect for things like this.
    When doing the cleaning I suggest you take a Q-tip, peal off the cotton and wrap with 4/0 steel wool. Use this with fingers only. Insert into the float needle seat. Spin, this helps get all the old fuel deposits out of the seat as well as remove any burrs from new.
    If you do decide to clean your carbs www.amckayltd.com/carbguide.pdf is a good read. I suggest you read it, print it out, read it again. Then using the carb guide follow the steps to tear down, clean, inspect what you have. Once you determine if you need any parts then buy what you need.
    Most kits come with a set of generic internal parts. This basic carb had many variations and was used on many bikes. Those generic parts may work with some bikes but not the XS650. Doing the tear down, clean and inspect first can save you money.
    Leo
     
  6. Chris1648

    Chris1648 XS650 Enthusiast

    Thanks Leo
    I have not done a carb cleaning as the PO told me he just rebuilt the carbs. I wanted to trust that after having done the top end rebuild.
     
    gggGary likes this.
  7. XSLeo

    XSLeo XS650 Guru Top Contributor

    Some PO's will tell you most anything to seal the deal.
    I used to dread carbs. I never felt that comfortable working on them. I used to have a good carb guy a long time ago. Gone now
    I couldn't find one that I trusted. When I found this site and the carb guide I found with a bit of courage I would try myself. Now I have three XS650s that run well.
    It will take a few times to learn all the little things that can be problematic.
    Cleaning the idle circuits can be a challenge. If not perfectly clean the bike won't run well.
    Leo
     
    TwoManyXS1Bs, GLJ and gggGary like this.
  8. Chris1648

    Chris1648 XS650 Enthusiast

    Carbs are my kryptonite...
     
  9. Norton7d

    Norton7d XS650 Addict

    FULL WARNING, I AM NOT AN CARB OR XS EXPERT

    The following could be a cure(s) regarding float needles, which could be the source of the problem.



     
  10. Chris1648

    Chris1648 XS650 Enthusiast

    Update... There was F**king grass in it!!
     
    TwoManyXS1Bs, mrtwowheel and gggGary like this.
  11. Norton7d

    Norton7d XS650 Addict

    How did that get pass the fuel filter?
     
    gggGary likes this.
  12. Chris1648

    Chris1648 XS650 Enthusiast

    Man I don't know. when I got the bike it was covered in caked on grass and grease.
     
    gggGary likes this.
  13. gggGary

    gggGary Stop that! Top Contributor XS650.com Supporter

    Those grass clippings will getcha one way er tnother.
     
    Jim likes this.
  14. Jim

    Jim Beyond the edge, is the unknown. Here be Dragons Top Contributor XS650.com Supporter

    Maybe it used to be a drug runner.... :rolleyes:
     
  15. Chris1648

    Chris1648 XS650 Enthusiast

  16. Chris1648

    Chris1648 XS650 Enthusiast

    and of course I ripped my float bowl gasket when I took it apart:doh:
     
    mrtwowheel, peanut, Jim and 1 other person like this.

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