Gladiator fuel overflowing.

[Tropical Gladiator]

If it just started happening on a 4 year old model Gladiator, I would be looking at the EVAP cannister. Especially if you are one that likes to tippy top off multiple times after the first click shutoff of the pump handle.

Even with no CEL?
and of course before it was having the issue 100% it became increasing by time the JT has 39,000 miles now.

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[Camaroboi13]

Without reading 19 pages the fix for me on my last Jeep was to insert the pump upside down. Handle facing up instead of down.

 

[ATL_Rubi]

Without reading 19 pages the fix for me on my last Jeep was to insert the pump upside down. Handle facing up instead of down.

Okay… interesting… going to give this a try

 

[Mr._Bill]

I've only had it overflow one time in over four years. I park just ahead of the pump so the handle is at a slight angle towards the rear. I fill on the slow setting. I only add about a quarter of a gallon after the automatic shutoff. Periodically, I'll throw in some Sea Foam fuel treatment or injector cleaner.

 

[Tropical Gladiator]

Without reading 19 pages the fix for me on my last Jeep was to insert the pump upside down. Handle facing up instead of down.

So there’s no definitive remedy….

 

[Mr._Bill]

So there’s no definitive remedy….

There have been a few reports of it being fixed by replacing the filler pipe.

The type of pump handle has some effect. Many of the ones here have been replaced with the type that have the shroud to trap the fumes.

 

[Tropical Gladiator]

There have been a few reports of it being fixed by replacing the filler pipe.

The type of pump handle has some effect. Many of the ones here have been replaced with the type that have the shroud to trap the fumes.

Talked to my “dealer technician” and told me Filler Pipe is the factory remedy for this issue.

 

[dcs1779]

I"m having same issue. Bought mine used about 5 months ago. Has happened occasionally. Did not happen first several fill ups. I have also noticed that since the first time it spewed gas, the gauge does not ever read full full. Even when i tried to top it off with pauses between. I got it with 16,000 miles and now sitting at 22,100. I'll try to check the vent hose connections.

 

[jho23ho]

Mine splashes out 4 out of 5 fill ups. I've just learned to accept it. I'm driving this jeep into the ground so I'm not worried about a little fuel down the side lol.

So, you not worry about gas eating out your paint?

 

[Jimko71]

So there’s no definitive remedy….

Dealer replaced my filler neck. Have not had the problem ever since. And mine was showing failing weld points and corrosion and I barley had 8 thousand miles on it.

 

[Terminus33]

So, you not worry about gas eating out your paint?

Not really. 151000 miles and it hasn't done anything yet. My hood hinges are bubbled and nasty and really... it's a jeep. It does what I ask of it and does it well. He'll I don't look like I did new either lol

 

[Hootbro]

Not really. 151000 miles and it hasn't done anything yet. My hood hinges are bubbled and nasty and really... it's a jeep. It does what I ask of it and does it well. He'll I don't look like I did new either lol

151K miles is pretty good. Any major mechanical issues over that time?

 

[Scruf]

I'll add my experience. 2020 Gladiator Overland, 3.6L. 30k miles.

If I fill until the pump clicks, it overflows every time. Initially it was just occasional, but now it's every time, every gas station. Even if I slow it down to fill at a trickle, when the pump clicks, it burps gas out. Incredibly frustrating. I've never filled past the first click with it. No CEL/codes.

Stopped by the dealership and asked about it. They claimed they'd never heard of that type of problem, but that I was out of warranty and diagnosis would start at $185.

 

[dcs1779]

So my dealer was not able to replicate, and this is probably mostly my fault. I had already filled up and they were only able to put about 1 gallon in. I don't think it had enough time to start the normal siphoning effect it gets when being filled from half a tank or so. After getting it back I have filled up 2 times while recording so I could show what was happening. It hasn't done it. I should be filling up again today and we will see what happens.

I do have a question though. It looked like the service technician may have cleaned out the little hole left of the fill cap back towards the hinge. I assumed that was for any water that got behind the cap to drain out. Is this a vent?

 

[Hootbro]

I do have a question though. It looked like the service technician may have cleaned out the little hole left of the fill cap back towards the hinge. I assumed that was for any water that got behind the cap to drain out. Is this a vent?

Just a simple water drain hole to the ground on the back side of the fender. Not a vent.

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