2019 5th Gen Ram fuel tank fill blockage

[RKJ]

After 50K miles the vehicle began to develop problems refueling. The gas pump would shut off after 50 cents or it would take 20 minutes to get $5 in the tank. So many posts say it is the filler neck so I went got a new Mopar filler neck but no it didn't help. Then they say ''it's the charcoal canister". I took the canister off and it weighed 1.2 pounds more than a new one and it smelled of gas. I was certain that this new one would solve the problem but still unable to introduce gas into the tank. Ram service bulletin mentions the roll-over valve so I dropped the tank to check the valve. The valve was operable and fine. I now wondered
what else could it be? I double checked the new parts & all fine. I blew out all evap lines and NO blockages. I check the evap purge valve operation as well as the evap vent solenoid and everything in good working order. While the tank was off I check all the tubular connections to the tank and all exterior connections showed no blockages. When I removed the fuel pump I noticed a submerged line from the pump that terminates at the FUEL VAPOR SEPARATOR. The separator is mounted to the roof of the tank internally with no exterior connections visible. I learned that vapors could pass only in 1 direction as if drawn by vacuum but blockage occurred if I tried to blow INTO the separator hose. I bought a new tank as the component is non replaceable. That solved my problem. But I wonder why I have seen NO OTHER posting on this defect!

 

[1791]

many post's on ram's not taking fuel. here is just a few

Thread '2019 Ram 1500 5.7 Limited not taking fuel'

Dec 27, 2023

I own a 2019 Ram 1500 Limited with 51,000 miles. Recently it developed a problem where I am unable to fill the gas tank without the pump clicking off every half gallon or less of gas going into it. I am aware of a TSB that is out for gas tank replacement because of a valve inside. My question is would this be covered under the emissions warranty or do I have to purchase a gas tank myself? I am capable of replacing it. The problem is it costs $700 or more just for the tank. If anyone has experience with this problem please let me know what fixed it for you. Thank you in advance!

• Ken R.
• Replies: 31
• Forum: 5th Gen General Discussion

https://www.ramforum.com/threads/2023-dodge-ram-filling-gas-problems.199264/

Dodge RAM problems | Ok dealership has put the 5th fuel tank into my 2020 Ram 1500 and still having a problem with putting gas in | Facebook

Ok dealership has put the 5th fuel tank into my 2020 Ram 1500 and still having a problem with putting gas in!! Has anyone else have this problem and have had it fixed?

www.facebook.com

 

[Greaser]

I get this issue, but not at every pump, which got the old thinking.
I don't know if it's the rate of fuel being dispensed and or the curvature of the nozzle but when I get stuck with a pump that doesn't play ball I find that putting the autohold on the lowest setting and rotating and holding the handle of the nozzle as close to the open filler cover as possible (rather than just letting it hang where it wants) seems to solve the problem.

 

[kapinallinen2]

I get this issue, but not at every pump, which got the old thinking.
I don't know if it's the rate of fuel being dispensed and or the curvature of the nozzle but when I get stuck with a pump that doesn't play ball I find that putting the autohold on the lowest setting and rotating and holding the handle of the nozzle as close to the open filler cover as possible (rather than just letting it hang where it wants) seems to solve the problem.

I have come to the conclusion that it is the rate of fuel being delivered. Me angling the handle towards the back of the truck helps and when pumping from a "hot" pump, only thing that helps is backing off a click or two.