Fuel comes back out fill tube when fueling 04titan
With the information you've provided, one cam only imagine that you are obviously over filling the tank.
So this leads me to suspect that maybe (just maybe) your gas gauge is saying you are on empty, or 1/4 tank or a 1/2 tank whatever, etc. And you are wanting to make sure it is full.
I presume it always says this and that perhaps you need to have the sending unit replaced inside your fuel tank.
Otherwise, if all things are in working order and you meant to say that the Pump Nozle that the service station uses (where you fuel up) is not shutting off when your tank is full.
One of two things are happening,
In the case of a pump handle that has an auto lever, either they have a faulty pump nozle, in which case you need to talk with them about this.
It is a manual Nozle, in which case you are holding the lever personally and are over filling your tank...
It would be advisable to look up the total fuel capacity of your tank and make a note of approximately how many gallon are in it before fueling up.
This way, if you know there are say around 5 gallons and you have an 15 gallon tank.
Adding even 10 gallons you would be running the risk of over flowing since you are only estimating say 5 gallons at the beginning, maybe it is 5 1/2 or even closer to 6. Therefore only about 9 gallons could be added without over flowing...
Hopefully you'll have found something useful in this.
Good Luck and happy motoring
on Oct 28, 2012