Fuel spill when filling up.

[Jaime]

Hello, 4.0, BA10, 18 gallon tank.

 

When I fill up the tank and the pump automatically shuts off some fuel always spills out of the nozzle. Not a lot but enough to reach the floor. I have had the tank out a couple of times and made sure that all the hoses were not crimped. This has happened ever since I've owned the truck.

 

Does anybody else have this problem and have you been able to fix it and how?

 

Thank you.

[Tommy]

Do all pumps do this? I've found some are more sensitive than others.

[redwolf624]

i'm having the same issue at all pumps in my area with my 86 MJ, i've seen a lot of wranglers have the same issue and heard it was a recall,

 

Redwolf

[dj5]

I had the same issue in my 95 ford probe after it sat awhile, after 5 fill-ups it slowly stopped doing it...I assumed it was pressure build up in the tank from vapors

[Jaime]

It does at any pump. Every once in awhile it won't spill. But the next time at it will, even using the same pump.

[gogmorgo]

Your fuel tank has two hoses going from the filler to the tank, yes? The larger one is the one fuel flows through, and the other one is a vent to release air from the tank so the fuel doesn't back up in the neck. Both of the hoses should be completely free of restrictions.

If everything checks out, try filling more slowly. If there are catches on the pump handle, try using a lower one, or just don't hold it all the way open. My parents used to have an old van that did something similar. If you filled at full speed, it would shut off and spray fuel at you, and then you could get another five gallons or so into the tank, but if you filled at half speed, it would shut off within a quart of overflowing, and wouldn't spit at all.

 

The MJ's fill vent setup is better than most, IMO. Most cars don't have much of an air release, and it can get clogged fairly easily if you do a lot of driving in a dusty environment. The MJ on the other hand has like, a 3/4" hose.