1. Forum membership has its advantages....

XR650L Carb Problems (need advice)

Discussion in 'Bikes' started by Boston Mangler, Nov 8, 2006.

  1. Boston Mangler

    Boston Mangler Member

    Joined:
    Jun 11, 2005
    Location:
    San Diego
    Hey Guys

    I got a 2006 XR650L that i just desmogged, uni-air filtered, and installed a carb with the mods listed below.

    I have the carb setup at: 55/158 jets, mix screw 2 1/4 out, needle shimmed .010. Most other folks say that this is the perfect setup for the L at sea level.

    My bike is running rich still and seems to be getting way too much fuel. After a good hard ride, i will get some fuel seepage from the carb vent as well.

    One of the guys on the 600/650 section mentioned that i might have "bumped" the floats and thats causing it to flood which would explain how its running. Anyone have any experience with this care to elaborate on how i can tell if i bumped my floats and if so, how to fix em?

    My friend that i ride with also says i am puffing a little smoke on Decel

    Any advice would be great!

    Thanks [​IMG]
     
  2. Chase 2

    Chase 2 Well-Known Member

    Joined:
    Jan 8, 2005
    Location:
    Simi Valley, CA
    puffing smoke on deceleration can be an indication of valve guides, which wouldn't help jetting woes.
     
  3. Moss2

    Moss2 Active Member

    Joined:
    Mar 24, 2006
    Location:
    Lincoln, Ca.
    That sounds like extremely lean jetting to me compared to what we used to run in the 600 and 628's. I think you have other problems. Try a new needle and seat(fuel inlet) and reset the float level. Also pull out the emulsifiers and make sure it is all perfectly clean. I think jets should be up in the 68/170 range or more if you have it opened up with exhaust etc.

    Ken

    Edit. Go to the dealer and order a factory service manual. It will explain how to set the floats etc. Stay away from Chiltons get the factory one.
     
  4. Moss2

    Moss2 Active Member

    Joined:
    Mar 24, 2006
    Location:
    Lincoln, Ca.
    Oops I mistakenly assumed that they had a carb similar to an XR600. I still dont see how they get enough fuel with that jetting. I would look for a 600 carb or Edelbrock to make tuning easier.
     
  5. Boston Mangler

    Boston Mangler Member

    Joined:
    Jun 11, 2005
    Location:
    San Diego
    Thanks Guys

    I have the factory service manual and see no mention of how to set the float.

    Also, all of the reasearch i have done online raves about the current setup i have (jets, desmogged, uncorked, etc.....)

    Its definitely NOT lean! :D that much i know!
     

Share This Page