XR650R carburetor problem

Discussion in 'Thumpers' started by RCTID, Jan 16, 2014.

  1. RCTID

    RCTID Adventurer

    Joined:
    Oct 16, 2012
    Oddometer:
    79
    Location:
    Beaverton, or
    So I just picked up an unmolested low hour 2000 XR650R(plated!:clap) in ridiculously nice condition. Super excited about this bike and what all i'm gonna do to it.

    However, despite all of the bikes general awesomeness, the carb is having a fuel retention issue. What I mean is...It spills fuel out pretty much all the time, except for when its not running. :eek1:eek1

    When I'm kicking it over(and having no luck), it seems to start spilling a steady stream of fuel out of one of the hoses even though the engine isn't flooded, and eventually stops if I quit kickin'.

    Once I get the bike started, it just seems to flow steadily to no end! :huh
    It doesn't matter where the rpm is at, idle or part throttle, it just keeps flowing until a few seconds after I turn the engine off.

    The guy who had it before me had it for a very short time and bought it at an estate sale from a deceased guy(didn't die on the bike). So he told me he disassembled and cleaned the carb because it had been sitting for so long without use.

    Now i'm no carburetor guru...Heck, who am I kidding, I am severely lacking in carburetor knowledge and have no real idea what could cause this. Anybody? Anybody? Bueller?
    #1
  2. mcma111

    mcma111 Long timer

    Joined:
    Jul 17, 2007
    Oddometer:
    13,071
    Location:
    San Francisco,Ca.
    The float needle and seat have some crud in them thus not shutting the fuel flow off and the float bowl is overflowing. Pull the carb and take the float off. Clean the needle and seat. Look at a Honda carb parts fich and you'll see what needs cleaning.
    #2
  3. oldxr

    oldxr Long timer

    Joined:
    Jan 28, 2007
    Oddometer:
    1,152
    Location:
    central komifornia
    While the carb is off make sure the intake manifold inside diameter is- full size.Not a rectangle restriction.These bikes came restricted and there was an intake boot + jet kit.The stock muffler can be uncorked and works good .IF it is uncorked the main jet will be a 175 68s pilot b53e needle.Safety issue-rh foot peg bolt fix.Info site http://www.xr650r.us/
    #3
  4. Angelsndevils

    Angelsndevils Pig handler

    Joined:
    Mar 2, 2013
    Oddometer:
    21
    Location:
    Ukiah, ca.
    Sounds like the float level set to high. Might need to bend the tab a little.
    #4
  5. Kiko

    Kiko Long timer

    Joined:
    Feb 23, 2006
    Oddometer:
    1,944
    Location:
    Jalisco, Mexico 45825
    I think most run the 68s pilot jet.
    #5
  6. oldxr

    oldxr Long timer

    Joined:
    Jan 28, 2007
    Oddometer:
    1,152
    Location:
    central komifornia
    68s-Its been awhile since I had a stock carb on my xrr.
    #6