So here recently the weather has been nice, so I've been on the bike a bunch. It's felt warmer in the crutch area even with the rss, but the fan comes on when I get off for a few minutes and kicks off like it's supposed too. Well yesterday I ride I to work and when I put some gas in it literally looked like my fuel was boiling there were bubbles coming up like crazy? Please tell me that's not bad....It was only 80 outside? One other thing took an extended ride one day before that and thought I was broke down in a boarder town went to start up and the bike kept dieing even under full throttle sounded like it was running on one cylinder and the fuel pump would only prime at the end for a second. I was thinking bad fuel so I put some fuel cleaner in when we got it running and great riding for the next six hours..Bike only has 34, 000 k on it. Any ideas on the fuel boiling, and does it sound like bad gas or may I need a fuel pump soon?
Never seen this before?
- Thread starter djs2k2
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Chicknstripn
Well-known member
Heard of this on the 1125 models but I have no clue as far as what you're dealing with.
Also not sure of the cause.
Give us some more info on your bike.
Also not sure of the cause.
Give us some more info on your bike.
Chicknstripn
Well-known member
Did a Google search that was literally "Buell XB fuel boiling in frame" and this came up:
http://www.buellxb.com/forum/showthread.php?48032-Problem-with-1125R-2008
http://www.buellxb.com/forum/showthread.php?48032-Problem-with-1125R-2008
2007 xb12r, Amsoil in both holes, 34k miles, K&N air filter, D&D twin can exhaust, EBR ECM, dobeck tfi system "like power commander" , right side scoop, and odie hawk air box heat shield. EBR race rotor but that doesnt make a difference....
user_deleted
Well-known member
carefully check your stock fuel cap and vent line. flip the cap over and look in the pin-hole vent area for obstruction or gunk. if underside of cap is clean then proceed to vent line. remove the airbox cover and follow the line from where it exits at bottom of left rear of frame up to the tank/frame vent fitting at the 1 o'clock position. the line must be free and clear, devoid of any pinched areas, and the vent on the tank/frame must be perfect. that would be the first 2 areas i'd check.
Gloomshadow
Well-known member
this happens a lot with my buddies in Brasil. They run **** gasoline with a high alcohol content and **** oil. Go back to 93 octane and put some 20W-60HD in the swing arm and see what happens. in your case, the oil may not make a huge difference though.. it sounds like bad gas to me.. you sure you didn't accidently put some kind of E85 high alcohol fuel in there?
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Chicknstripn
Well-known member
I hope that dobeck efi/tfi system isn't making your bike run dangerously lean. I could see that causing some heat related issues.
Have you checked codes or what not with ECMspy?
Have you checked codes or what not with ECMspy?
user_deleted
Well-known member
were my initial thoughts as well chickn. just for the hell of it i'd pull the front plug and take an accurate reading or have someone who knows what they're looking at take a reading. front obviously being the simplest.
Gloomshadow
Well-known member
good thinking... E85 will also cause the afv to go haywire (o2 cant get a reading) and run real hot and lean.. fuel boiling in the frame.. I bet that dobeck is doing something bad and causing a lean condition.
Gloomshadow
Well-known member
dump that gas and get rid of that dobeck and see what happens... if its good. flash a race map to the ecm and the power will come back
actually more I think about it, those guys in brasil weren't running lean, they were running real rich if memory serves.. afv was super high like 150%-160% I think it was..
looked like the o2 was telling the ecm to add a buch of fuel bc it could not get a reading off of high alcohol fuel.. they run like 40% alcohol down there.. o2 gets a bad reading and thinks its not getting fuel so it just dumps more.. the bike would bog, get hot as hell all kinds of problems. you need ecm spy cable.. see if the o2 is good, get rid of that power commander ect ect
screw it man, dump that gas and see what happens
actually more I think about it, those guys in brasil weren't running lean, they were running real rich if memory serves.. afv was super high like 150%-160% I think it was..
looked like the o2 was telling the ecm to add a buch of fuel bc it could not get a reading off of high alcohol fuel.. they run like 40% alcohol down there.. o2 gets a bad reading and thinks its not getting fuel so it just dumps more.. the bike would bog, get hot as hell all kinds of problems. you need ecm spy cable.. see if the o2 is good, get rid of that power commander ect ect
screw it man, dump that gas and see what happens
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Took this video after I got home from work once the cooling fan had kicked off fuel was still boiling in the frame the temperature was in the low eighties some stop and go traffic some highway traffic about 15 miles worth of driving. https://youtu.be/C46seSScmH8
Gloomshadow
Well-known member
should not need to I don't think... TPS is just TPS..
hold on.. you on stock filter and pipe?
Gloomshadow
Well-known member
it happens in brasil all day long... crap gasoline.. I suspect that thing he is running is getting the fueling incorrect
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