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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » BB&D Archives » Archive through April 07, 2010 » Gas leaking from u a little tube « Previous Next »

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Mattmcc00
Posted on Friday, March 26, 2010 - 11:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Last night I gasses up my 08' Uly 20km after the fuel light came on.

Got home parked the bike in the garage and did some other stuff for some 15-20mis.

I then return to the garage (fan had stopped) and notice that I have a gas puddle forming under the bike??

I trace it back to a little tube strapped under the silver frame. also it wasn't a little drip-drip, it would pee out a few ml then stop for a min then pee out another spurt, then stop again.

Any ideas? should I be worried?

Perhaps I overfilled?? airpressure in the tank??

thx,
MMcC
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Panhead_dan
Posted on Friday, March 26, 2010 - 12:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That is the vent/overflow tube. Due to heat buildup after shutdown coupled with leaning the bike over on the kickstand, it'll do that. I make a habbit of either not filling the tank quite so high or riding it a bit more before I park it inside my garage.

In short- "they all do that".
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Froggy
Posted on Friday, March 26, 2010 - 12:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You over filled it probably. Having some drip out is normal. What happens is gas vapor escapes out the vent tube, then after it cools off it condenses and drips out. From the sound of it, you experienced fuel expansion.
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Hooper
Posted on Friday, March 26, 2010 - 12:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Avoid getting down on all fours to investigate the issue while smoking.
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Mattmcc00
Posted on Friday, March 26, 2010 - 02:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks all, thats kind of what I figured was happening but better to get an opinion than risk anything.

thx,
mmcc
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Ratbuell
Posted on Friday, March 26, 2010 - 03:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Don't ever fill past the lower/inner ring in the filler neck. I only go to the ring if I'm away from home, that way I know I'll burn some off on the way home before I park it.
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Tbolt_pilot
Posted on Saturday, March 27, 2010 - 01:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

...and don't transport your bike with a full tank on any military cargo aircraft. At altitude, the fuel will expand and overflow onto the floor of the aircraft and subsequently run up and down the roller tracks creating a nausiating, high-inducing vapor when the aux heater stirs the fumes up.
This effect is worsened by large vehicles.
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