| Author | Message | ||
     Rwcfrank |
Well, is it? | ||
| Hangetsu |
No. Gas caps in general aren't vented. If you no longer get a suction when you remove your car's gas cap, it likely won't pass many of the emissions checks. | ||
| Etennuly |
These caps are not vented. There is a vent tube that runs from the top right of the fuel tank and exits by the left foot peg. | ||
| Rwcfrank |
Thanks! | ||
| Teeps |
The vent tube is connected to the Charcoal Canister on our bikes. Evaporative emissions control Evaporative emissions are the result of gasoline vapors escaping from the vehicle's fuel system. Since 1971 (1970 in California), all U.S. vehicles have had fully sealed fuel systems that do not vent directly to the atmosphere; mandates for systems of this type appeared contemporaneously in other jurisdictions. In a typical system, vapors from the fuel tank and carburetor bowl vent (on carbureted vehicles) are ducted to canisters containing activated carbon. The vapors are adsorbed within the canister, and during certain engine operational modes fresh air is drawn through the canister, pulling the vapor into the engine, where it is burned. | ||
| Court |
Periodically it vents . . . you'll just be riding along and all of a sudden it will start screaming at you. . . . . stuff about wheel bearings, recalls and all sorts of off the wall crap. I just ignore it. | ||
| Etennuly |
Rwc, You probably do have that independent country of CA model with the charcoal can. Same as the other part of America, just with more parts involved. | ||
| Rwcfrank |
Periodically it vents . . . you'll just be riding along and all of a sudden it will start screaming at you. . . . . stuff about wheel bearings, recalls and all sorts of off the wall crap. That's funny!!!!!!!!!!!!! | ||
| Reedracers |
I wonder if mounting an external tank say on a rear rack and running the fuel line to the vent spout would work ? As long as the external tank had a vent it should work right? Dwayne | ||
| Etennuly |
Vent tubes need to run down (or up) hill, over a single arch should work also. If you get a dip in the tube where it will hold liquid it will block the air from venting. Yes, as long as it has a system vent that is not blocked by liquid it should work. | ||
| Falcon2 |
I am not sure if going in through the vent line will work, if you make a vent line a gas line, then where is your vent? My spare tank is mounted in the trunk, and is vented. The gas goes to a fitting on the fuel pump that was the drain plug. If both tanks are full, and I open the petcock, it will push all of the extra gas out the main tank vent tube. | ||
| Boogeyman |
Teeps - I don't think that all vehicles have sealed systems, my 2001 softail had a vent that just dumped gas out on the ground under the bike when I overfilled it. It would do it with the gas cap on as well. Maybe I'm missing something about how my bike was designed? | ||
| Teeps |
"Our bikes" = California (or 50 State) Buell Ulysses, all years. (Message edited by teeps on March 07, 2010) |
