Busy morning! Back during the summer, when I was doing all my frame cleanup, etc. I had mentioned my continuing “tighten gas cap” saga. With the left rear wheel off and the splash shield removed, I could see the top of the tank where the vent elbow/nipple comes out. It looked like a rodent had chewed up the top corner of it, so the tank was open to the atmosphere. I JBWelded it, to see if that would close it up. Apparently I closed it up too much, because when I went to fill up, I got the fuel shutoff problem. Came home, opened it back up and then did another fix with a nylon elbow to go over the open part, then JB Welded again. Went to fill up, all OK. Tighten gas cap message continued. (I’d already replaced the cap, vent solenoid and purge valve up front.). But at least I was able to put gas in it.
Went to put some more in it the other day for the first time since above, and got the fill up problem again. It would cut off after about 5 seconds. Got 1/4 tank in her, came home and started more research. Ordered a new Delco cannister.
If you remember, I’d mentioned that the dealer had re-pulled the tank after installing the new one a few years ago due to rodent damage. When they did, they did not hook up one of the lines right and when i filled it and parked on a hill, gas started running out the tank. (prob from the vent hose at the back.). What I discovered in the summer working on the nipple was that they did not route the vent line over the frame like it was supposed to be. Instead, they pinched it between the tank and the frame. This collapsed it and also pulled the connector at a bad angle. Here’s a pic
After pulling the cannister, my neighbor and I dropped the rear of the tank and rerouted that line. I used my channel locks to try and work the flattened part back open more. Used my compressor to ensure the line was clear and had good flow over to the cannister connection. The O-ring inside the connector had been pulled at such an angle that it may not have been sealing to the nipple good. I used a lot of Vaseline on the nipple, especially on top to try to get a better air seal and reinstalled the line. Oh, and the dummy at the dealership had put the fill hose to the tank on upside down with the notch that is supposed to go to meet the top of the neck facing downward. Anyway, blew out all the lines including from the purge valve at the intake and all clear. Did not get any charcoal pellets from the old canister or from the lines. Have it all back together, and will go try to put more gas in it after lunch. Keep your fingers crossed!