| Author | Message | ||
     F_skinner |
Forgive my ignorance of all things Uly. My 2009 X leaks gas for about 20 minutes after I am done riding. It is coming out of the gas overfill hose (at least I think that is what it is). When it first happened I thought I had over filled it but after 150 miles on the same tank of gas it still does it. Not a lot, just enough to make the whole garage smell like gas. It is a slow drip. I am still breaking it in and have about 400 miles on it. I have been riding with the temps in the low 20s and high 60s but that does not seem to effect it. Is this normal for a new bike? Thanks, Frank | ||
| Dentguy |
No it's not normal. | ||
| Ft_bstrd |
It's not normal. There is a pressure valve to the right of the filler hole (must remove the airbox to see it. If the pressure valve is faulty, it will weep fuel all the time. It's only supposed to allow fuel out when there is pressure (fill up a hot bike, heat from frame causes fuel to swell). Have the dealer to replace the pressure valve. | ||
| F_skinner |
Thanks Ft bstrd. I will keep a close eye on it and have them look at it during the 1K service. Frank | ||
| Ratbuell |
I think the S2's ganged up on it... | ||
| F_skinner |
I think the S2's ganged up on it FUNNY, I took both S2s out this weekend while the Uly sat in the garage. I even got the S1W running again. Hotter coil, new plug wires and plugs, carb adjustment. I bounced her off the rev limiter on my 1/4 mile track. What fun.... I rode to work today, on the Uly, it was 23 degrees and when I came home it was 70... Jan in Colorado, you gotta love it. | ||
| Ft_bstrd |
Send some of that warmth down our way. It's friggin' freezing down here.  | ||
| Hooper |
Aside from the time when I found that I had a frame crack (after hitting Bambi's daddy), I believe you could still have overfilled the tank! If you've filled the gas beyond the silver collar, you run the risk of overfilling the tank. It results in the dripping of fuel through a tube on the left side near the shifter for awhile until equilibrium is reached... At this point, I learned my lesson... | ||
| Maximum |
Hooper is correct. I seem to always overfill my tank (I can't help myself), which is normally not a problem if you are immediately going to ride some...like my normal 30 mile commute to work. One time I overfilled the tank just 2 blocks from the house...then decided to do a tps reset, after which I let the bike idle to full temperature. Everything seemed fine until I shut the engine down and heard a hissing sound. It was coming from the fuel vent tube. If this chain of events ever happens to you...do what you can to cool the frame and fuel...but DO NOT under any circumstance remove the fuel cap!!!!! I ended up with about 1-2 gallons of fuel all over my garage floor, covering my bike and everything else within a 6-10 feet radius of my filler cap. It was not a pretty site. Did I say "I"...I meant "a friend of mine" did this act of stupidity!  | ||
| Ratbuell |
I took both S2s out this weekend while the Uly sat in the garage. I even got the S1W running again My poor tubers have been sitting for months. I rode each one once, when I got out of the hospital, just to make sure I could (or was going to be able to) ride them still. And the S1W got it's 5k at work. Since then, I've redone the seat lock on the S2 so it doesn't spin in the bodywork anymore, and hung a complete race exhaust on the S1W...but neither one's been out. Too much salt on the roads - you can't even tell what color my Uly is supposed to be! (not that that's anything new...) | ||
| F_skinner |
I have over filled my Firebolt and it would dump for a while but it would not last long. Usually after going 10 or 20 miles I would not notice it anymore. The Uly was doing this for 150 miles. I filled her up again on the way to work today and will walk out and check a little later. Thanks for all the help. Frank | ||
| Jammin_joules |
This is strange. I had never heard of a XB leaking through the over fill hose until yesterday when another BWBer from Greeley stopped in. Now Frank has it here on BWB as well. The Greeley rider started off Wed telling me how much he loved the 2006, took a 4,000 trip with it once, and was just interviewed for over two hours as one of six in Colorado owners by some marketing firm. He was going to do a 10K maintenance soon so I shared with him some tricks that our service techs have learned over the years. He went and bought parts. Then he shared his only complaint. Ever since the bike was new he has had to leave it outside to cool because it drips gas, full, near empty or in-between, drops under the bike and a strong odor of gas. Then last week, in mid-60 degree temps after a 2 mile errand, he heard bubbling. He asked if it was normal for gas to boil in an XB or Uly!!!?!?!? NO!!  We walked back to service and aft6er a good 20 minutes with the dealer, or service manager and one of our Buell techs who does the Pikes Peak bikes, we could not convince him that gas does not boil, we did not know what the problem was, but asked that he please let us diagnose it. He wanted to do it himself at home since he had already been at the dealership an hour and he had 50 miles to ride home. We theorize that there is a pressure build up due to some unknown root cause and what he heard was bubbling, and what he saw when opening the filler cap was air bubbles escaping. Frank, please keep us informed on this anomaly and when possible, let us get your bike in to diagnose and repair it. I can use that as a plea to the other BWBer to let us do the same for him. Problem was, he didn't leave his contact info. I will see what I can do to track him down from Parts Dept. when he bought tune up stuff. ~jammer | ||
| Svh |
Gasoline will boil and seems like an occurence on these XB's and 1125R's. I will do some digging but I know someone will find it before me. There was a thread talking about the 08 1125R's boiling as almost a commonplace. | ||
| Svh |
Ok found this: http://www.engineeringtoolbox.com/fuels-boiling-po int-d_936.html 100-400*F is gasolines boiling point. The wide range is because of the unknown additives in X brand gasoline. The higher the octane the lower the boiling point. | ||
| Natexlh1000 |
Is altitude a variable here? Mine has never boiled or dribbled or anything. | ||
| Froggy |
If I remember right, a liquid under pressure has a lower boiling point. | ||
| Glenn |
A liquid under pressure has a higher boiling point. An example is your cars radiator. With the pressure cap in place there is no boiling. Take it off with a hot motor and you'll get instant steam. | ||
| Svh |
Glenn is correct and altitude does factor into the ability of the fuel to boil in the frame because it is not pressurized. | ||
| Tootal |
Altitude and pressure both make a difference in the boiling point. I can boil water at 60 degrees if it's in a vacuum. This happens in pipes going to pumps where the intake is cut off and the pump is still trying to pump, it forms a negative pressure and liquids can boil at lower temps. If your gas cap is not venting properly maybe as your fuel is used you are forming a negative pressure in the tank.? That would make the cap hard to remove! | ||
| Ulyscol |
The same thing happened to me when my Uly was new. Everyone said I just over filled my tank but to this day I am 100% sure I didn't! The gasoline leaked on my swingarm and took the paint with it. | ||
| F_skinner |
Well the cap is easy to remove but I noticed it is leaking while riding. It did leak at work today but not much so I thought since I just filled it up with gas less than .4 miles from work that removing the cap had something to do with it. When I got home I removed the cap and it did leak but again not as much. Tootal, it seems to me that if it is not venting properly that it would vapor lock at some point and cause the bike to stall. But, I do think it is not venting as well as it should. I will check the fuel cell vent like Ft Bstrd suggested. Jammer, do you have any in stock? part number P0115.02A8B | ||
| Tootal |
I didn't think that was your problem, I was just saying that altitude and pressure do have an effect on liquids. If yours was not venting then it would vaporlock eventually since fuel pumps can pull a greater vacuum than gravity did on a carbed engine. It would also keep you from leaking. I think the "large one" is probably right | ||
| F_skinner |
Thanks Tootal, I was thinking today that this might be related to the hard starting during the cold mornings. Almost like the fuel pump is primed but not enough fuel. Sometimes it takes me three times to start it and then it surges for about a minute before settling into idle. Some people say that is normal until about a 1000 miles but I do not think it is. Frank | ||
| Tootal |
Hmmm, if you didn't have some sort of fuel problem I would think you might have an intake leak. Sounds like maybe a check valve in the fuel pump is not allowing it to hold pressure. But what that would have to do with a leak? I'm not sure those two problems are related. I love a good mystery but when it keeps me from riding it's not so lovable!! Sorry I can't be more help. | ||
| Ft_bstrd |
If there is a failed check valve in the pump, could it allow a fuel regurge back into the tank increasing pressure and pushing past the vent valve? The pressure equalizer is the vent. The valve prevents fuel from "sloshing" out and only allows fuel to vent when there is pressure in the tank due to warming and expanding fuel. I dunno. I do believe there is a problem that needs to be corrected, though. | ||
| Rotorhead |
I've had my overflow vent check vale stick closed. I have a tendency of having my bike on it's side off road, allot. In a tip over the check valve keeps the fuel from running all over. Gravity is supposed to open the valve. It was kind of a hard tip over and the bike was really hot. I think with the high temp and the valve closed the pressure in the tank would not let the valve open once the bike was upright. The bike ran ok and the tank did build up pressure. when I stopped for gas the cap just about blew out of my hand. I had to ride another 100 miles home, so no chance of the road side fix. Got home I took out the valve and tried to blow and suck to see if it was clogged or something. Air would not flow in or out. Gave it a good whack on the work bench and it let loose. I could suck air through as if the tank was venting and it would stop air from flowing if I turned it upside down. I think my problem was magnified with hot fuel expanding on a stuck valve. My condition my be completely opposite of yours, but it was a stuck vent valve. | ||
| Dentguy |
Some people say that is normal until about a 1000 miles but I do not think it is. Not sure who told you that, but it's crap. That whole normal until 1000 mile thing gets thrown around too much. Could be leaking around the gas cap seal or around the sealing ring. When you ride it, gas is splashing up and getting past the sealing area into the drain area. That will cause it to leak while riding and cause you to see it leaking leftover gas in that area when it sits after riding. Hope that doesn't sound silly because I don't have a Buell in front of me anymore to look at. Isn't there an overflow area around the sealing ring that is also used to drain off rain water? That what I'm talking about. Gas getting in that area while riding from a bad seal and draining out during the ride and after the stop. Might be worth checking? (Message edited by dentguy on January 22, 2009) | ||
| Ratbuell |
Frank - no backorder on the part, but the only 2 dealers showing it in stock are: California Dealer Location Phone(P)/Fax(F) Ventura Harley-Davidson Camarillo P-805-981-9904 F-805-981-7141 Return To Top Florida Dealer Location Phone(P)/Fax(F) Adamec Harley-Davidson Shop at Regency Jacksonville P-(904) 641-3735 F-(904) 646-9934 | ||
| Jammin_joules |
P0115.02A8B is a fuel cell vent assy. We have sold only one in May 2007. I am checking on availability to order in the event that is what is needed for this issue. Also a call has been made to tech services. ~jammer | ||
| Maximum |
Now that is service! |
