Chris, can you detail how you plumbed and wired your fuel vapor canister set up ?
Ok so this is how i wired and plumbed the charcoal canister to both tanks, with a purge solenoid wired into the computer.
First picked up a newer style charcoal canister along with the purge valve from a 93 Bronco. They are the same on virtually every ford truck in the 90's. The valve is usually mounted near the EGR on these trucks and are usually plumbed with a vacuum or fuel line from the charcoal canister to the valve then to the upper intake.
I restored all the stock vapor lines the way they were run as it was in 76 but added a hard line (used a left over brake line i had) over the lower back side of the fire wall above the transmission from the passenger side frame to the driver side frame. Then from the driver side frame I ran rubber vacuum tube up with the wires to the canister which I mounted in that big blank area to the right of the brake booster.
I wired up the purge valve through the old throttle assemble hole in the firewall to Pin 31 on the mustang computer (CANP). The other wire requires 12v so wired that into the 12v wire I ran for a light under the hood.
The way the system works or as i understand it is when the engine is fired up the computer opens the valve to allow all the vapor that might build up when sitting in the tanks and dumps it into the upper intake. The valve had markings for the direction of the flow.. mine says ENGINE with and arrow.. so mounted the lines with the arrow following the lines to the intake. I have had no smells and seems to be working. Pretty easy, hardest part was finding a way to wire into the RJM harness into the computer. I used a weather pack male end and modified it to fit through the circular computer wire pin hole.
last thing I have to do is to secure the bottom of the canister which right now is just mounted by the top screw...
anyway some pictures. If anyone needs more detailed pics let me know i can take whatever you need.
Here you can see the canister on the driver side near the brake booster, I ran the vapor line through the brake booster bracket to the solenoid near the upper intake, then into the intake itself. The wires for power and computer come through the stock wire location on the firewall.
heres a pic of the mounted location, had not run the solenoid yet...
