Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: 04 xb12s won't start at random times

  1. #1
    Junior Member
    Join Date
    Sep 2011
    Posts
    10
    hello, I recently bought an 04 xb12s and immediately had problems with it. i bought it off craigslist and as soon as i got home the bike stalled. it took like 3 tries before it started back up again. sometimes it just doesn't want to start unless i leave it alone a few hours. it always starts after leaving it for a few hours (3-4 hrs). Now, the previous owner had just replaced the fuel pump, and I read on another thread that someone was having a similar problems and it turned out to be the o-rings in the fuel pump, he said they leaked and the bike didn't start unless he left it alone for a while. Could it be that the previous owner did not change the o-rings? any help would be greatly appreciated since I cant ride my new bike fearing that it will leave me stranded. thanks :)

  2. #2
    Senior Member
    Join Date
    Mar 2007
    Posts
    354
    Just to be clear: it cranks over well but doesn't fire up? Does it sound like its trying to fire?

  3. #3
    Junior Member
    Join Date
    Sep 2011
    Posts
    10
    Yep, it cranks over, just doesnt start. One time i was trying to start it, and a couple of drops of fuel fell from behind the seat, on the left side of the bike.

  4. #4
    Junior Member
    Join Date
    Sep 2011
    Posts
    10
    Oh i forgot, i already replaced the coil and spark plugs as well...when its cranking over it doesnt do anything else, just cranking. Not even a hint of trying to start. But if i leave it alone, for a few hours it starts just fine.

  5. #5
    Senior Member
    Join Date
    Aug 2008
    Posts
    5,146
    ...a couple of drops of fuel fell from behind the seat, on the left side of the bike.
    That's your gas breather tube....you aren't overfilling when you gas up are you?

  6. #6
    Junior Member
    Join Date
    Sep 2011
    Posts
    10
    No, actually i have never taken it to fill up. Still has the gas i purchased it with, about half a tank i would say

  7. #7
    Senior Member
    Join Date
    Jul 2011
    Posts
    112
    Any codes?

  8. #8
    Junior Member
    Join Date
    Sep 2011
    Posts
    10
    no codes at all.

  9. #9
    Senior Member
    Join Date
    Jan 2009
    Location
    Portland, OR
    Posts
    3,485
    Assuming the bike gas spark. Do you hear the furl pump prime, then shut of before you start it?


  10. #10
    Senior Member
    Join Date
    Nov 2010
    Posts
    1,486
    Bad Gas? fill up and sea foam it



Page 1 of 2 12 LastLast

Similar Threads

  1. 06 xb12s no start
    By adrnlnjnky700 in forum Buell Lightning XB12S, XB12Ss, CityX, XB12Scg
    Replies: 2
    Last Post: 05-26-2014, 03:32 PM
  2. 2005 XB12S Won't Start... no help from ECMSPY
    By DamnRock in forum Troubleshooting
    Replies: 7
    Last Post: 04-06-2014, 04:40 AM
  3. Buell XB12s won't start, when sitting on it.
    By flexib0y in forum Troubleshooting
    Replies: 5
    Last Post: 10-09-2013, 01:04 PM
  4. Low Fuel Light coming on at random times
    By Kuntreeboy in forum Troubleshooting
    Replies: 3
    Last Post: 06-12-2011, 10:02 PM
  5. XB12S: my clock and odometer resets after start-up
    By Miss_Buell in forum Buell Lightning XB12S, XB12Ss, CityX, XB12Scg
    Replies: 13
    Last Post: 10-12-2009, 10:59 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •