in my 1983 k10 I think I have found my vapor canister. to my understanding doesn't it put the vapors from the tank into the engine to help with emissions and mpg. and if so I would like to hook mine back up. as far as I can tell it has a steel line going to it that comes up from the frame. then their is a rubber line that comes from the canister and just runs straight out and rest on the wheel well and all of this is on the drivers side up by the radiator. Thoughts?