I noticed a strong gas odor while driving my 1999 Superduty V-10, which I recently acquired. I checked for fuel line leaks and then looked into the charcoal evap. emm. canister. This canister has one hose going to it from the gas tank to collect vapor and then it just has an open vent on the front end which vents into the engine compartment. I think this is the source of my gas fumes. I've check out two different shop manuals and they describe a purge valve system which removes vapor from this canister and routes it to the engine for burning. My truck was built in Canada, and it either never had this purge system, or it has been removed. I can't find any clear photos showing this setup. Does anyone have any info on this? I need another way to route the gas vapors other than into the engine compartment - I got quite a buzz driving in hot weather the other day with the AC on - the AC picked up the fumes and dumped them into the cab!
Thanks
John