Filling the fuel tank

[Kratos]

Are you getting heavy fuel smells from your bike?? :shocked:

No I'm not......question is why not? Doesn't overfilling automatically send the extra fuel to the canister?

 

[NancysToy]

No I'm not......question is why not? Doesn't overfilling automatically send the extra fuel to the canister?

First, slight overfilling will not automatically send gas to the canister, but it is a frequent occurance. If the purge valve is working correctly, fumes should be pulled back into the engine most of the time. If the temperature is such that the gas in the canister doesn't vaporize readily, then the fumes out of the free-air vent tube can be minimal. Lots of variables. To make matters more complicated, many of the odors may be coming from fumes escaping the old cap. The new cap tightens things up.

 

[Kratos]

First, slight overfilling will not automatically send gas to the canister, but it is a frequent occurance. If the purge valve is working correctly, fumes should be pulled back into the engine most of the time. If the temperature is such that the gas in the canister doesn't vaporize readily, then the fumes out of the free-air vent tube can be minimal. Lots of variables. To make matters more complicated, many of the odors may be coming from fumes escaping the old cap. The new cap tightens things up.

Thanks Nancy. Well I don't know if I've gotten gas in there or not. But I won't be over-filling anymore thanks to this thread.

 

[Bob Denman]

Kratos,
Meet you in the Ozark/Springfield area in April??

 

[Kratos]

Kratos,
Meet you in the Ozark/Springfield area in April??

Sure....I kept the Spyder....:thumbup:

 

[chris56]

I really plan to try the tip of luke here ..


http://www.spyderryders.net.au/index.html

but without a cigarette

 

[BajaRon]

Ok, here we go sports fans! Aided by my highly accurate, expertly crafted scale models of the Can-Am Spyder fuel/vapor/canister system.

Can't you just feel the excitement building!

Tank #1 - Properly functioning Vapor Elimination System with Purge Valve Closed. No movement of fuel vapors.

Tank #2 - Properly functioning Vapor Elimination Process with Purge Valve open. Negative pressure created by the engine intake system evacuates fuel vapors from the canister eliminating fuel smell and fire hazard while keeping vapors from escaping into the atmosphere. (The planet is saved!)

Tank #3 - Fuel tank is full, vapors escape to Canister as designed. Tank cannot be filled above this level due to location of fill tube (not shown)

Tank #4 - Due to expansion as fuel warms, vapor void has now been filled with liquid fuel. Liquid fuel then flows to vapor canister. Vapor canister is not designed to handle liquid fuel. Because there is no way to evacuate the liquid fuel, it remains at bottom of canister producing vapors and smell continuously and potential fire hazard.

 

[BajaRon]

I really plan to try the tip of luke here ..


http://www.spyderryders.net.au/index.html

but without a cigarette

You can overfill your tank quite a bit more efficiently with this mod! :thumbup:

 

[NancysToy]

Ron, you have neglected to include the atmospheric vent, which should also be controlled by the purge valve.

 

[BajaRon]

Ron, you have neglected to include the atmospheric vent, which should also be controlled by the purge valve.

Yes, I know. I was at the limit of my extraordinary artistic abilities as it was. I also left out the fill tube which controls maximum fill height. Neither one really adds a great deal to the overfill, fuel in the canister discussion so I figured I could get away with it.

 

[Kratos]

Wow, thanks for the awesome drawing. I must admit I'm a little scared now....

 

[BajaRon]

Wow, thanks for the awesome drawing. I must admit I'm a little scared now....

Knowledge is power!