Jeep Gladiator Locking Fuel Door

[aceisback]

I only knew because as I was driving along I had one of those feelings like I was forgetting something but couldn't figure out what. I finally decided to pull over and walk around the truck........

I’m gettin to that age myself. Hell just the other morning I had “that feeling”. Went outside and walked around the front yard just looking and looking, all the while waving good morning to the neighbors and raising my coffee mug in a toast to another day of not waking up dead.
Well I couldn’t figure it out and gave up the search. As I walk back into the house there stands my wife with her hands on her hips and a nasty scowl.
Says to me, Victor, where are your pants and underwear…

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[HorneyBadger]

Mopar makes a cap that is pricey, and you can key it to match your OEM Fob:

Mopar Locking Gas Cap for 18-21 Jeep Wrangler JL & Gladiator JT | Quadratec

I picked up a Mopar locking cap for the wifes jeep a few months ago. Easy to Key to the fob as there is a video. Been on a few months and no codes. I would trust the Mopar cap over any other as I have had bad experiences in the past like everyone else on 3rd party caps.

 

[joeym7]

I got the less expensive Mopar Cap that requires its own small key (no big deal it is small but a lot cheaper than the key your own one)...Seems to work well. But given I always park Mojave in the Garage and have another car for parking lots, I don't use it. Yet, that is, but I have it if needed.

 

[Joe Gladiator]

is there a fuel tank skid plate that we can add?

 

[IanNubbit]

So the gas, going at a high rate into the tank, can pass, but you can't get a 1/2" hose past it?
The safety things I've seen talk of the valve closing as the tank reaches full to prevent kick-back of the gas in the filler due to the increase of air pressure in the tank as it fills. They imply the valve is open otherwise while filling, etc. (Looks like Chrysler has a bad history of fuel fill problems)

Let's just say I've had to replace many tanks in the past year alone for what you're describing. Not once have we been able to find a way to get gas out from the filler neck. It's drill every time. The filler neck enters at the bottom of the tank, not the top. Check valve is very small in comparison to a lot of other manufactures. you'd have to get hose past the initial flap, then all the way down, then somehow above the lip on the bottom of the neck (think of it as a reduction with no taper, this is where the check valve sits) but in the gap between the check valve and the lip. It's ALOT of luck to get it to work

 

[ShadowsPapa]

Let's just say I've had to replace many tanks in the past year alone for what you're describing. Not once have we been able to find a way to get gas out from the filler neck. It's drill every time. The filler neck enters at the bottom of the tank, not the top. Check valve is very small in comparison to a lot of other manufactures. you'd have to get hose past the initial flap, then all the way down, then somehow above the lip on the bottom of the neck (think of it as a reduction with no taper, this is where the check valve sits) but in the gap between the check valve and the lip. It's ALOT of luck to get it to work

Filling through the bottom explains why a lot of people are having fuel splash-back when filling. You are creating a certain amount of momentum in that fuel column, and the air at the top of the tank as to escape as quickly as fuel comes in. If it does not, the sudden stop of the nozzle, and the stop of fuel in will result in any remaining air pressure at the top of the tank pushing back.
Plus there could be a bounce in that column of fuel in the filler. The nozzle is shoving the fuel in via the pressure against the fuel in the filler, then you let up, it's going to bounce back.
Nasty design, IMO.
But I'm a bit confused on the filler situation as if it goes into the tank at the bottom, liquids seek their own level, the fuel in the tank and the fuel in the filler would be at the same level or height. If the tank is full, the filler tube must also be full. And unless that check valve was perfect, as you drew fuel out of the filler, the tank would replenish it. How does it keep from having fuel in the filler, or keep from seeking its own level.

 

[Gvsukids]

is there a fuel tank skid plate that we can add?

There's already a fuel tank skid plate.

 

[Joe Gladiator]

There's already a fuel tank skid plate.

im new to the Jeep world i havent crawled under mine yet... but thanks didnt know.

 

[NachoRuby]

im new to the Jeep world i havent crawled under mine yet... but thanks didnt know.

Yep, if you want a skid plate anywhere, it's under the fuel tank. It would be pretty dangerous offroad otherwise. It's low hanging fruit.

 

[TroutFishingInAmerica]

Modern tank check valves prevent you from really having any chance of siphoning gas

Really, tell that to the 17 year old that siphoned my gas. How do I know he did it, he left me a note saying he did it. I live in a rural area and he didn't have enough to get to a station so he siphoned some of mine. It's easly done, yucktube has videos on how to do it. I bought a locking gas cap. He can ask next time.

 

[saintpauljeff]

both Mopar caps are OOS at Quadratec, I'd like the cheaper one using a separate key, but the fob programmable one with the tether feels like a nice opportunity to try something even slicker

 

[Gvsukids]

im new to the Jeep world i havent crawled under mine yet... but thanks didnt know.

You should look under there, there's a lot to see.

 

[HankB]

Filling through the bottom explains why a lot of people are having fuel splash-back when filling. You are creating a certain amount of momentum in that fuel column, and the air at the top of the tank as to escape as quickly as fuel comes in. If it does not, the sudden stop of the nozzle, and the stop of fuel in will result in any remaining air pressure at the top of the tank pushing back.
Plus there could be a bounce in that column of fuel in the filler. The nozzle is shoving the fuel in via the pressure against the fuel in the filler, then you let up, it's going to bounce back.
Nasty design, IMO.
But I'm a bit confused on the filler situation as if it goes into the tank at the bottom, liquids seek their own level, the fuel in the tank and the fuel in the filler would be at the same level or height. If the tank is full, the filler tube must also be full. And unless that check valve was perfect, as you drew fuel out of the filler, the tank would replenish it. How does it keep from having fuel in the filler, or keep from seeking its own level.

It may be plumbed like the tanks on our boat, the fill line fills only and a separate line allows air to escape. Also just like home heating oil tanks.

For those that are concerned there is a marine product made by a company called Vetus that goes into the fuel fill line and expands, it allows fuel in but not a ship on hose. I used one on a boat we used to keep on a mooring. Clammers are cheap basterds and will siphon gas if they need it. I think it was called an octopus and after i installed it my fuel mileage improved drastically. Not sure if it will work on a Jeep because of the size, but the concept will.

 

[IanNubbit]

Filling through the bottom explains why a lot of people are having fuel splash-back when filling. You are creating a certain amount of momentum in that fuel column, and the air at the top of the tank as to escape as quickly as fuel comes in. If it does not, the sudden stop of the nozzle, and the stop of fuel in will result in any remaining air pressure at the top of the tank pushing back.
Plus there could be a bounce in that column of fuel in the filler. The nozzle is shoving the fuel in via the pressure against the fuel in the filler, then you let up, it's going to bounce back.
Nasty design, IMO.
But I'm a bit confused on the filler situation as if it goes into the tank at the bottom, liquids seek their own level, the fuel in the tank and the fuel in the filler would be at the same level or height. If the tank is full, the filler tube must also be full. And unless that check valve was perfect, as you drew fuel out of the filler, the tank would replenish it. How does it keep from having fuel in the filler, or keep from seeking its own level.

I’m not saying I like the design lol. Lots of vacum and air bleed trickery

 

[joeym7]

You should look under there, there's a lot to see.

Good advice, I just got my new creeper put together yesterday, going under today for a long detailed look...I have looked several times from the sides, but at my age too much of that (neck bending) requires a follow up with my Chiro lol...One thing I did notice when I stuck my head under there looked like some sort of insulation (?) - silver in color. Any thoughts on what that might be?

Thanks

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