Gas backing up while fueling

[expredator]

I've recently had this issue where the pump clicks ever quarter gallons and stops fueling. When I pull out the nozzle a little and pump, gas back up and shoots out. No codes whatsoever. On my research, it seemed that most folks get codes when the vent valve or charcoal canister went bad, but no codes for me. Any ideas as to what might be causing the issue? I have a spare tire underneath the car and don't want to go through the whole trouble taking it down and look at the individual components of the tank when there could be an easier fix.

 

[Fless]

Check the function of the vent valve; they can be intermittent but it should be open with the engine not running (key off, like when you're filling up). If that's working properly then move on to the charcoal canister, which should be accessible without doing anything to the spare tire or the tank. When you remove the evap lines from that, if charcoal pellets come out or you can't blow gently through the canister, it's time for a new one. You can also blow out some of the evap lines from there.

 

[tuckerrnr1]

When I had the charcoal canister off, I blew out the lines by blowing air into the tank from the filler neck. I learned the hard way from trying to top off the tank too many times.

 

[Joseph Garcia]

^^^^^x2^^^^^ Never top off these trucks. When the pump spigot shuts off, remove it, done.

 

[snives]

I've recently had this issue where the pump clicks ever quarter gallons and stops fueling. When I pull out the nozzle a little and pump, gas back up and shoots out. No codes whatsoever. On my research, it seemed that most folks get codes when the vent valve or charcoal canister went bad, but no codes for me. Any ideas as to what might be causing the issue? I have a spare tire underneath the car and don't want to go through the whole trouble taking it down and look at the individual components of the tank when there could be an easier fix.

The best way to destroy your carbon canister is by topping off your gas tank after it has already clicked off.

 

[expredator]

So, I've got some updates on this issue:

I've changed the charcoal canister and calve solenoid with new ones. There were a lot of charcoal pellets inside the canister, but a lot were also coming out of the evap lines. I blew out as much I could from the lines with a can of compressed air. The issue still persists, I still can't pump gas without the pump clicking every 0.1-0.2 gallons. If I go faster, gas shoots back out. Have to pump in very slowly to get in some gas. I've also recently been getting the "tighten fuel cap" message.

I feel like there is an obstruction somewhere, maybe a thick ball of charcoal pellets somewhere that needs to be loosened up. What I have not done so far (because I didn't have the equipment) is to blow air into the tank and watching for more pellets to come out. Any other thoughts yall might have? I still do not have a code (or engine light for matter). I spoke with a mechanic recently who said the next step would be to drop the tank, but that seems to be associated with a lot of work and money.