Why does it take a long time to put fuel into tank.

It's probably the filler some filler heads you have to keep constant pressure on or they shutdown or filler isn't in deep enough causing a back flow shutting off the flow

Try not putting fuel nozzle in so far. Fuel flow cuts off on back pressure of the air being displaced by the fuel when filling. Can be a problem with narrow neck tanks and some fuel fillers are more sensitive than others.

There is a vent hose that comes from the tank back to the filler neck, it could also be the filler neck hose. Might be kinked or seperated.

HI Bridgette,

Due to the different shapes of fuel tank filler necks in cars & trucks, it may be necessary to vary one or more things to allow fuel to flow uninterrupted until the tank is really full.

The main problem can come from the new "vapor recovery" gasoline pumps. These pumps and hoses actually recover gasoline fumes from your tank as the liquid gasoline displaces the air / fumes in the tank is it is being filled. If gasoline flow is started at full blast, it can splash back slightly, causing liquid to be pulled back by the pump - so it shuts off. So, start with a slow rate of filling and gradually increase flow rate to maximum over 5 to 10 seconds. If it still shuts off, try some of the suggestions below.

First, don't fill at maximum flow rate from the pump - that is, don't set the nozzle for wide open. Select one of the other "latches" on the handle instead of the fastest flow and let the tank fill entirely at this rate.

Second, you should experiment a bit with the length of nozzle that you push into the tank's filler neck. If you push it in too far or too little, the pump nozzle can do what you're describing.

Third, try twisting the nozzle slightly so that it doesn't hang straight downward - a little to the left or right may provide a solution.

Lastly, try a different gas station. Their pumps may not be so picky with your tank's filler neck.

Good luck!

The fuel tank is always below the fuel filler port (where you put the gas in). Find the filler neck and follow it back to the fuel tank.

Removal & Installation To Remove:

1. Properly relieve the fuel system pressure.
2. Drain the fuel tank through the filler pipe.
3. Support the fuel tank.
4. Remove or disconnect the following:
   • Negative battery cable
   • Filler neck
   • Shield and tank straps
   • Fuel lines and vapor hose from pump and tank
   • Electrical connection from fuel pump
   • Fuel tank
   • Fuel pump/sending unit assembly by turning the locking ring (located on top of the fuel tank) counterclockwise using a spanner wrench
   • Fuel pump from the fuel lever sending device

To Install:

1. Install or connect the following:
   • Fuel pump in tank with new seal around opening
   • Tank and connect fuel lines and vapor hose
   • Tank to the frame
     1. Torque to: 33 ft. lbs. (45 Nm)
   • Shield
   • Fuel filler neck and clamp
   • Negative battery cable
2. Refill the tank.
3. Run the engine and check for leaks.

View of the in-tank fuel pump assembly.

There are check ball valves in the filler neck and vent line that close in a rollover preventing fuel from flowing out of the tank. One or both could be closed. Has this Jeep been on its side or top recently? Another possibility is that someone has put something down the filler neck.

What it does have is a plastic checkball(almost like a ping pong ball ) in the tank which prevents back flow up the filler neck. If this hangs up,it will cause poor flow the right way fuel goes in the tank. I have poked around and got these to free up before. The last time I used a small peice of plastic tubing and successufully freed up the ball.Severe cases my require tank removal as there are some makes and models out there requiring a replacement fuel tank.

After researching this for a lot of vehicles is this:

A ventilation line or the filler hose/neck/tube has possible damage. The only way to know is to drop the tank and inspect the lines going to and from the gas tank to the filler neck where you put the fuel pump nozzle in. If the neck has not been installed correctly, i.e., is twisted or dented/bent, this will cause the problem you are having.

If you can drop the tank and inspect these items, let us know what you find.

It souds like the air return line from the fuel filler pipe is plugged. When you fill up the car the air has to escape from the tank or else the fuel backs up into the filler neck shutting off the fuel nozzle. The air pipe is housed in the fuel filler pipe and lets the air escape as the fuel is going into the tank. Remove the filler neck and inspect air bypass line to see if it is kinked or plugged.