I had a real problem with fuel purging out the vent tube (single vent tube) and after going through all kinds of setups, I finally went with a dual vent system and incorporated a vapor canister in the system. NOTE: I also have a Ricks aluminum tank with an in-tank pump, and the design of the tank places a portion of the vent tube (in the tank) below the fuel level in the tank, so that under any pressure, the fuel would be purged out the vent tube, until the fuel level would go down; however, even after the fuel level went down there was always the smell of fuel in the garage as a result of vapor being released through the vent tube. The design of my current system includes two vent tubes... one originates where the original stock tube came from. The second vent tube comes from the fuel fill neck. I had a threaded bung welded in the fuel neck. The two vent lines are routed into the truck where they are mated together at a Y-fitting. From there the tube goes into a vapor canister, mounted backside corner of the the trunk, then exits the canister and goes through a hole that leads to the outside of the trunk and runs a short distance away from the tank and rear tire. This system is extremely neat and clean and permits filling the tank completely full without any fuel purging or vapors. The vapor canisters are a bit pricy, but worth every penny. The best part, other than no fuel leaking, is when I walk out into the garage, there is absolutely zero orders. Even my wife has stopped complaining about the horrible smell that used to come from the car. I would routinely get a bunch of grief about the smell and was constantly told that if the smell did not go away, the car would have to be parked outside. All is good now... happy car, happy wife.
