OK, took the bike to the shop for an oil change, and maintenance work to be done. They blowed out the evap caniser to see if that would fix the fuel smell problem. When I got home the smell was back so canister went. OK , now I used the same hose that was there that came out under the bike the evap canister used and just put a barb between it and the tube coming from the bike. Went and filled it up, really filled it up and rode for a couple of hours, no smell but I still get the fuel drips on the end of the hose as before? I am wondering if it is the heat from the exhaust that is heating up the fuel to form a vapor and when collected in the vent line it cools down back into a liquid, any thoughts?
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And the fuel still drips....
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NancysToy
Motorbike Professor
The fuel is heated in the gas tank from normal operation. It can even boil there. Vapors are pushed out the vent, into the canister (if you have one), and either to the intake during operation, or to the atmospheric vent when the Spyder is turned off. The atmospheric vent is the hose you see. Vapors condense in the hose sometimes, and drip out.
I had really bad gas fume and dealer replaced canister few times, one dealer wrapped the exhaust pipes in hope of keeping heat down, another dealer un-wrapped them cuzz wrapping is not advisable. They tried couple of other things but no help.
Than I ran a hose from overflow of canister to back of spyder and that helped a lot but a lot of fuel was dripping out of hose. By the time I decided to go canister-less, brp's bulletin on that hose extension out and dealer did that while something else was done and pulled my old hose out.
I am not sure if everyone did the canisterectomy the same way but I retained the can and pulled hose with purge valve out, plugged it and ran a hose to rear from that output of the can. Now I have two constant vent for canister, sorta.
Gas smell is almost gone and no fuel from hose or it's vented in small amounts not visible.
Hose was shorter this time. I figure longer the hose , more vapors of fuel will get trapped.
Than I ran a hose from overflow of canister to back of spyder and that helped a lot but a lot of fuel was dripping out of hose. By the time I decided to go canister-less, brp's bulletin on that hose extension out and dealer did that while something else was done and pulled my old hose out.
I am not sure if everyone did the canisterectomy the same way but I retained the can and pulled hose with purge valve out, plugged it and ran a hose to rear from that output of the can. Now I have two constant vent for canister, sorta.
Gas smell is almost gone and no fuel from hose or it's vented in small amounts not visible.
Hose was shorter this time. I figure longer the hose , more vapors of fuel will get trapped.
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Mspiv
New member
Vapors condensing and dripping.... That sounds awfull ccombustible . I think I read about a couple of Spyder fires on this board
NancysToy
Motorbike Professor
The vapors themselves are what is flammable, and they are always there. The quantity here is small, though, and would not be likely to reach the lLower Flammmable Limit (LFL) in an open space. Venting of vapors, and even dripping of condensed vapors is not uncommon in most vehicles. You just don't notice it in most cases. There is no reason to link this venting/dripping with any fires, although some were thought to have possibly been caused or complicated by the much shorter, vent hoses on the early 2008s, which were vented in an enclosed space near the exhaust pipe. There was a TSB to extend the hose on those machines to where it is today.
fuel smell/condensation drips
two simple/free actions that will help: when filling tank, pull back on nozzle accordion rubber tube to vent to atmosphere ( filling stations force tank venting thru the canister during refilling saturating it ). 2) just before shutting engine off, check if the radiator cooling fan is running, if yes, idle engine until fan goes off ( shutting engine off at the peak temperature allows under skins and fuel tank temperature to spike much higher) . p.s. the evaporative control system on the spyder is waaay too small unfortunately so occasional odor is inevitable but drips can't be normal imho.
two simple/free actions that will help: when filling tank, pull back on nozzle accordion rubber tube to vent to atmosphere ( filling stations force tank venting thru the canister during refilling saturating it ). 2) just before shutting engine off, check if the radiator cooling fan is running, if yes, idle engine until fan goes off ( shutting engine off at the peak temperature allows under skins and fuel tank temperature to spike much higher) . p.s. the evaporative control system on the spyder is waaay too small unfortunately so occasional odor is inevitable but drips can't be normal imho.
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