I have a 2011 Expedition XLT and last week it started having issues at the pump. Try to fill it up and the nozzle just clicks. Have to go insanely slow. I mean like it takes 20+ minutes to fill the tank and it constantly pops. Tank doesn't seem to be venting properly. Can't figure it out why though. Here's where I'm at:
-Dropped the tank. Followed the lines.
-I checked the vent line to the filler neck. Removed it, blew through it. It's clear.
-I disconnected all the lines to the charcoal canister. They're all clear and no signs of charcoal residue or anything.
-Hit the canister valve with 12v. It closes like it's supposed to and remains open without power.
-The one-way bungs on top of the tank both function fine. You can hear the pellet move and block the valve when you blow into them. Both seem to allow air out of the tank.
-The vacuum harness on top of the tank is clear of obstructions.
-The vent on the fuel pump assembly seems to be fine. (I didn't take the assembly out and check internally)
-Thinking it could still be a blockage in the charcoal canister or something north of the tank, I went to the gas station and popped the vacuum line to the tank vacuum harness off the canister and tried to fill it. Same result. Immediate clicking.
To sum up, I know it's something between the filler and the charcoal canister. Lines appear to be good. Unless I'm missing something it's got to be related to the tank or specifically one/some of the valves on the tank??? Going to drop the tank again in the morning and pull the fuel pump assembly and see what I can see.
What say you? What else should I look for?
-Dropped the tank. Followed the lines.
-I checked the vent line to the filler neck. Removed it, blew through it. It's clear.
-I disconnected all the lines to the charcoal canister. They're all clear and no signs of charcoal residue or anything.
-Hit the canister valve with 12v. It closes like it's supposed to and remains open without power.
-The one-way bungs on top of the tank both function fine. You can hear the pellet move and block the valve when you blow into them. Both seem to allow air out of the tank.
-The vacuum harness on top of the tank is clear of obstructions.
-The vent on the fuel pump assembly seems to be fine. (I didn't take the assembly out and check internally)
-Thinking it could still be a blockage in the charcoal canister or something north of the tank, I went to the gas station and popped the vacuum line to the tank vacuum harness off the canister and tried to fill it. Same result. Immediate clicking.
To sum up, I know it's something between the filler and the charcoal canister. Lines appear to be good. Unless I'm missing something it's got to be related to the tank or specifically one/some of the valves on the tank??? Going to drop the tank again in the morning and pull the fuel pump assembly and see what I can see.
What say you? What else should I look for?