X-Challenge not starting when warm...

Discussion in 'Thumpers' started by CrazyIvan, Jun 1, 2008.

  1. CrazyIvan

    CrazyIvan Vonkentrekker

    Joined:
    Jul 20, 2002
    Oddometer:
    152
    Location:
    Schriek , Belgium
    Gf is doing a rally in Eastern Europe on her X-Challenge, and it seems that her bike won't start when warm...
    Besides that the bike runs fine, doesn't use oil, starts first time in the morning.
    It's only when the bike is at normal operating temperature, it won't start again ! After waiting about 15 minutes, it starts without a problem !

    Any ideas ?

    Cheers
    #1
  2. Hoots Magoon

    Hoots Magoon Hey ya'll, Watch this!

    Joined:
    Mar 22, 2007
    Oddometer:
    1,259
    Location:
    Redneck in New England
    Check the tank vent line
    #2
  3. kutch

    kutch That fell off where?

    Joined:
    Jul 15, 2005
    Oddometer:
    586
    Location:
    Here, There and trying to be Everywhere.
    Hoots got me cured when I asked just about the same question.

    I had a stalling at idle issue when warm as well.
    Brought it in for the 600 mile inspection. Sure enough - stall codes were present and cleared.
    Was told that it could be a sensor, but seeing that the codes cleared, that ment that the sensor was not completly defective - so it was left in.

    On the way home from the 600 she started going through stalling fits at just about every light. And in one intersection, she died and all most got me ran over...That iced it.

    Had her towed back the next day. Stated in the most polite way that I almost got creamed in an intersection due to stalling...Again.

    Week later, all of a sudden there are no codes...Nothing wrong. My fault if it continues...Bike given back.

    OoooKay.

    Seemed to run a little better, but not great.

    HOOTS stated the same thing when I asked here.

    So upon looking for myself, I found the reason A.) the seat didn't fit well and B.) the reason for stalling.

    One of the rubber bumpers on the bottom of the seat was pinching the tanks vent line going to the air box. (it was routed that way from the factory...Zip tied to the TOP of the frame rail!!)

    Cut ties, moved below rail, zipped. So far no issues...Rough idle gone, Much more quick to rev.
    Moral of the story...?
    Everyone can have a bad day and miss stuff. I know.
    But after three misses, (original dealer and two shots at another) -and a possible spatter...I was once again shown the hard way that no one cares for your stuff like you...:deal

    LEARN YOUR BIKE.
    ASK QUESTIONS.
    #3
  4. kres

    kres Arrrrrrrrr! Super Supporter

    Joined:
    Feb 23, 2005
    Oddometer:
    1,230
    Location:
    Back home in Charlottesville! Woot!
    Two things:

    1) The G650's has the same "twitch" that the F650's had. When you start it up, turn the key, wait for all the lights except the oil light (and maybe neutral is starting there) to go out. Push the starter and keep it down until the oil light goes off. Do not twist the throttle. Especially when cold, the computer sniff's through the various sensors, and tweaks its control over O2 / idle / etc.

    2) You may be suffering from bad breather hose / nipple placement. See my rant and correction here.

    Good luck!
    #4
  5. CrazyIvan

    CrazyIvan Vonkentrekker

    Joined:
    Jul 20, 2002
    Oddometer:
    152
    Location:
    Schriek , Belgium
    Hi Guys,

    Thanks for the info.

    The fuel breather lines have been checked the first day. Even tried starting the bike with the fuel cap removed just to make sure. It's a euro spec bike, so it doesn't have all the cannister stuff.

    Strangely enough the bike runs perfectly, doesn't stall or run rough.
    It just won't start when it's warmed up !

    About the starting procedure : She's did about 80.000 km on a 650 Dakar, so she knows about the "no throttle twisting" issue.

    Unfortunately she hasn't got the possibility to visit a BMW dealer to read the fault codes. The rally is traveling offroad through Poland, Slovakia, Hungary and Romenia, with no time to visit a BMW dealer, so I'm trying to get some extra info to her for the limited time left in the evening...

    Cheers
    #5
  6. kutch

    kutch That fell off where?

    Joined:
    Jul 15, 2005
    Oddometer:
    586
    Location:
    Here, There and trying to be Everywhere.
    I may have my tubes mis-named...Someone can chime in and name that tube...

    My issue was the tube from the top of the tank, going forward to the airbox.
    It was run along the top of the frame rail - zip tied to the left side.

    Not anything to do with emissions tubes going down over the side to the charcoal cannister.

    In KRES photo you can just make it out, on the left, -not the middle of the photo...


    kutch
    #6
  7. GB007

    GB007 Been here awhile

    Joined:
    Aug 22, 2007
    Oddometer:
    284
    Location:
    Southern California, USA
    I have been struggling with the stall at iddle my self since I got the bike. Service Dept. always tells me all is fine and it's me. When I got a foam filter it stopped stalling for a while, but it's now doing it again. I'm going to check the vent lines myself. As far as your issue of stalling when Hot, it has happened to me as well occasionally. Let us know what was the cure..
    #7
  8. CrazyIvan

    CrazyIvan Vonkentrekker

    Joined:
    Jul 20, 2002
    Oddometer:
    152
    Location:
    Schriek , Belgium
    Nr. 3 ?

    [​IMG]
    #8
  9. kutch

    kutch That fell off where?

    Joined:
    Jul 15, 2005
    Oddometer:
    586
    Location:
    Here, There and trying to be Everywhere.
    Yup...# 3.
    Where my finger is pointing was the pinch point.
    The tube was actually ON the frame rather than next to it...!
    White zip tie was what I added.
    #9
  10. kutch

    kutch That fell off where?

    Joined:
    Jul 15, 2005
    Oddometer:
    586
    Location:
    Here, There and trying to be Everywhere.
    And if you follow it up and behind the oil dip stick...
    This is were it ties in.
    #10
  11. kutch

    kutch That fell off where?

    Joined:
    Jul 15, 2005
    Oddometer:
    586
    Location:
    Here, There and trying to be Everywhere.
    And following KRES story.
    If that was the pinch point, it seems all they'd have to do is move the tube rearward. Looks like allot more room just a few inches back...?
    #11
  12. GB

    GB . Administrator Super Moderator Super Supporter

    Joined:
    Aug 16, 2002
    Oddometer:
    69,949
    Thanks Kutch :thumb Added this thread to the Index.
    #12
  13. kutch

    kutch That fell off where?

    Joined:
    Jul 15, 2005
    Oddometer:
    586
    Location:
    Here, There and trying to be Everywhere.
    I finally just realized something under the seat///
    #13
  14. tcs

    tcs Palmer

    Joined:
    Jan 27, 2008
    Oddometer:
    146
    Location:
    Parts Unknown
    Maybe they should let Loncin build the whole bike.

    tcs
    #14
  15. britowner

    britowner G650GS

    Joined:
    Sep 27, 2013
    Oddometer:
    10
    Location:
    GLoucestershire , UK
    My G650GS starts ok, then will stop, and not tick over, you can start it holding the throttle open, but it wont tick over on its own, have to use throttle cable adjust to hold it at tick over, for the rest of the journey, Sometimes if I turn ign off and on again it still stalls, sometimes it now ticks over OK. Looked for pinched tubes etc. all seems OK. any ideas?
    #15