| Author |
Message |
    
Mark_massey
| | Posted on Friday, June 11, 2010 - 10:21 pm: | 
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I ride an '03 XB9R and overall it has been a worry-free dream to own. Recently, however, it has developed...for lack of a better term...a gremlin. Several times immediately after I have stopped to fuel up the bike, I will be pulling away from the gas station and the bike will sputter, stumble and lose power. If I let off the throttle the engine returns to idle and will idle just fine, but any throttle input is met with sputtering and chugging. There is no "check engine" light associated with this condition and it doesn't happen every time. (about once in every 5 or 6 fill ups) The cure at this point seems to be puling out of traffic, shutting the bike down and letting it sit for about 5 minutes. Start it up after that and everything seems fine. Techs at my servicing dealership can't seem to duplicate the problem. Wondering if anyone else has experienced this problem, or better yet, had it properly diagnosed? And if so, what's the fix? |
Petebueller
| | Posted on Saturday, June 12, 2010 - 01:26 am: |
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A friend of mine had the same problem with his 07 STT. He either had to let it cool down or warm it up.
It did it once a Jardine and Race ECM was fitted. I had him put the stock ECM back in it and then I put in a map for a Jardine and did a TPS reset. That cured the problem completely.
Of all those things the TPS reset was possibly the main cure. If yours has been running well and has recently developed the problem I'd reset the TPS first. |
Sparky
| | Posted on Saturday, June 12, 2010 - 02:22 am: |
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When I had my 03 XB9R, I had the symptoms you described at times. I found the cause to be overfilling the gas tank.
When this happens, gas floods the charcoal cannister and presumably dumps raw fuel into the intake tract which may temporarily affect the O2 sensor enough to cause rough running, cutting out and loss of power.
The fix is to fill up to a level no higher than the lower ring inside the filler neck. |
Rsh
| | Posted on Sunday, June 13, 2010 - 01:04 am: |
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+1 on what Sparky posted. If you overfill the tank it causes rough running.
I have also had the same issue if the frame is extra hot and I fill to the lower ring, the fuel expands and causes rough running. |
Petebueller
| | Posted on Sunday, June 13, 2010 - 09:38 pm: |
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I've got an 07 XB12R. The sidestands lean the bike a bit more than on earlier models. It is an Australia model so no vapour trap. I fill mine to the top on the sidestand, wiggle the bike and the fuel settles to the ring. I can't overfill it on level ground. I have to be more careful with the 1125R.
My friend's problem wasn't limited to fuel stations - it was any time he stopped. It was just that fuel stations were usually the shortest stops and the ones that were the biggest pain. |
Terrys1980
| | Posted on Monday, June 14, 2010 - 09:46 am: |
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For all those with this issue, I guess you never read your owners manual.
http://www.buell.com/om/99475-05Y_en/file-1.asp#hd topic000091
Read second warning. |
F22raptor
| | Posted on Tuesday, June 15, 2010 - 01:41 pm: |
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It is called Hot-Soak,and it was a big problem on cars for awhile.When sitting,fuel boils in the fuel-rail causing lean/rich running until the temps equalise.The crap gas we all have to buy does not help any.The fix on cars was a return-less system with better software for injector on time as well as canister purge changes |
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'03 9R hesitation, and loss of power after refueling