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Discussion Starter · #1 ·
I've got a 2018 RAM 2500 and was wondering if others have had issues with the fuel pump nozzle clicking off constantly while trying to fill the tank? It does it constantly, sometimes I can get it to pump if I click the handle on the first detent but other times I have to just barely feather the pump on so it doesn't click off. I'm assuming there's a kink in the filler pipe or some sort of restriction in there. Obviously I'll have to bring it back to the dealer but I was wondering if anyone else has run into this problem.
 

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I've had it happen once but it cleared up after a couple tanks.

My theory...the angle of the filler prevents most nozzles from fully inserting into the filler neck. When only partially inserted, the nozzle is in line with the vent line and fuel flows down the vent, filling the vapor canister or at least enough to cause a blockage.

I struggled through a couple tanks until I found a station with a nozzle that fully inserted. The blockage has either evaporated or drained out and I've been good every since.
 

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It may be one of two things
a Restricted vent tube or you need to get the filler neck replaced with a modified filler neck



on the right is the new modified filler neck
Notice the raised vent tube location & the different angle on the top ring

The new angle allows the gas nozzle to go further in
The raised vent tube keeps the sensor on the gas nozzle well below the vent tube

https://www.youtube.com/watch?v=q3phjAQZdGg
 

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I don't know
I just remember that it was posted a couple of weeks ago
One of the members on here mentioned that their dealership's Techs came up with the idea & they made one & sent it into Ram
Ram liked it & began having them produced & it was given a Mopar part number
 

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'18 RAM 3500 4WD Tradesman 6.4
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I was following the saga of the problems folks were having with fueling for a while, and I'm pretty sure that people were/are reporting getting the filler neck replaced under warranty if they had been experiencing the fuel delivery nozzle getting stuck in the old style necks.

Not sure too many people reported problems with splashback kicking off the safeties in the delivery nozzles though, which is what's happening here.
Still, that new filler neck should certainly resolve the issue, unless there's a blockage further down in the fueling or vent tubes.
Either way, should be a warranty diagnosis and fix.
 

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Discussion Starter · #7 ·
I've tried pulling the nozzle halfway out and it makes no difference. You can hear the fuel coming up the fill pipe then it clicks off. I have some recalls that need attention so I'll let them know about this issue as well.
 

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'18 RAM 3500 4WD Tradesman 6.4
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I've tried pulling the nozzle halfway out and it makes no difference. You can hear the fuel coming up the fill pipe then it clicks off. I have some recalls that need attention so I'll let them know about this issue as well.
Sounds like the vent tube is kinked or otherwise restricted. That or the filler tube itself is blocked somehow.
Whatever it is, they should fix it under warranty. In your situation, if they tell you it's fixed when you pick up the truck, my first stop would be the closest gas station, just to make sure.
 

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It may be hard to picture in your mind,

Imagine the trucks Vent tube in the fuel filler neck
Now think about the Gas nozzle with the fuel sensor at the end of the unit

IF the vent & the Sensor are in a direct line with each other
The gas that is burping back up the vent tube would hit against the gas nozzle sensor & cause the gas station nozzle to automatically shut off.

With the modified fuel filler tube, the filler tube vent is right under the ring at the top, that would put the gas station nozzles sensor well below the the end of the vent tube when filling the gas tank.
When the tank & fill tube are full of gas, the sensor reads the actual level of the gas & shuts off as designed
 

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'18 RAM 3500 4WD Tradesman 6.4
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It may be hard to picture in your mind,

Imagine the trucks Vent tube in the fuel filler neck
Now think about the Gas nozzle with the fuel sensor at the end of the unit

IF the vent & the Sensor are in a direct line with each other
The gas that is burping back up the vent tube would hit against the gas nozzle sensor & cause the gas station nozzle to automatically shut off.

With the modified fuel filler tube, the filler tube vent is right under the ring at the top, that would put the gas station nozzles sensor well below the the end of the vent tube when filling the gas tank.
When the tank & fill tube are full of gas, the sensor reads the actual level of the gas & shuts off as designed
Well OK, that's fair enough in a way.
But the problem that people were having with the old style filler neck, the one with the vent tube lower down in the filler neck and less of an angle on the mounting flange, wasn't that they couldn't pump gas without tripping the splashback safety on the pump nozzle, it was that the nozzles were getting stuck in the filler neck by reason of the flange angle being a poor alignment, and that caused the nozzle to "wedge" and get stuck.
There really shouldn't be a bunch of gas "burping" up the vent tube during fueling anyway, not until the tank is almost at capacity or unless there's some other issue going on. The vent tube is intended to allow air in the tank to escape as it's being displaced by the incoming fuel so there is no pressure build up.


The complaints about the old style filler neck involved stuck nozzles after refueling, and I don't remember seeing a significant number of complaints about an inability to run the pump nozzles at full blast with the old style filler necks. Surely if the lower location of the vent tube was as inherently problematic as you suggest, there would certainly have been many, many more complaints just like the one that starts this thread, because tens of thousands of RAM trucks are running with those older design necks with the vent tube in the lower location
 

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There have been several complaints about the gas nozzles kicking off about every gallon of gas that goes into the tank.

The gas nozzles getting stuck should be corrected with the recently modified filler neck
It is a new modification, so it may take awhile for them to become available
Only time will tell
 

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I've got a 2018 RAM 2500 and was wondering if others have had issues with the fuel pump nozzle clicking off constantly while trying to fill the tank? It does it constantly, sometimes I can get it to pump if I click the handle on the first detent but other times I have to just barely feather the pump on so it doesn't click off. I'm assuming there's a kink in the filler pipe or some sort of restriction in there. Obviously I'll have to bring it back to the dealer but I was wondering if anyone else has run into this problem.
Hi GearHd6,

We understand that at this time, you are seeking advice from other forum members. However, if you need additional assistance while your Ram is in service, please feel free to send us a private message.

Darlene
Ram Social Care Specialist
 

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Well this is an interesting topic as I just purchased a new Ram 2500 about a month ago and I've had the same issue show up a coupe time when filling up. Since it didn't occur every time I wasn't sure if it was the truck or the gas pump. I know it's annoying as Hell when it happens
 

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Discussion Starter · #15 ·
Well this is an interesting topic as I just purchased a new Ram 2500 about a month ago and I've had the same issue show up a coupe time when filling up. Since it didn't occur every time I wasn't sure if it was the truck or the gas pump. I know it's annoying as Hell when it happens
I thought it was a station issue as well until I had it happen at another gas station. Now it's time to figure it out before it drives me nuts.
 

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Gas tank filler

I had the same problem. The filler neck vent filter, located high on the filler neck was plugged with dust and dirt. Cleaned it and never had the problem again.
 

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I've got a 2018 RAM 2500 and was wondering if others have had issues with the fuel pump nozzle clicking off constantly while trying to fill the tank? It does it constantly, sometimes I can get it to pump if I click the handle on the first detent but other times I have to just barely feather the pump on so it doesn't click off. I'm assuming there's a kink in the filler pipe or some sort of restriction in there. Obviously I'll have to bring it back to the dealer but I was wondering if anyone else has run into this problem.
I too have had this problem. It didn't start until several weeks or a couple of months ago. Doesn't seem to matter where I fill up, however, I think a couple of times here and there it has worked properly. I too have problems with the nozzle not fitting properly, but not as bad as some have had. I need to get to the dealer in the next couple of weeks for oil and filter, and I will bring it up with them. Good to read down lower in the comments that there may be a replacement/better part in the pipeline to solve these problems. BTW I have an 18 1500 Hemi 4x4
 

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Sorry to hear about your troubles, but I have not had a problem with mine. I would guess that there is a difference between gasoline and diesel filler necks.
 

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Do I understand this correct fellers. This thread was started by diesel owner. More than one person with 1500 gas engine has same aggravations, including me. What bothers me more than constantly restarting the pump and wondering if I'm full or not, is the pump handle protective (usually) black rubber flange is marking up my three month young '18 pearl white truck. So far I am able to clean it up but eventually I worried about rubbing a sore spot right above the filler door. Can anyone expand on this being a warranty fix? I'm still couple weeks away from first oil change and want to inquire at dealer with certain amount of confidence.
 
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