Trouble filling H3 gas tank.

[HummerHippy]

I bet there's some check valve or something that comes from the tank to regulate pressure while you dirve and use up gas, that may be plugged. Or theres some other place in the fill up pipe that is clogged. Something like that.

[sammy1]

I think it's a pressure problem. As soon as you start filling the tank, it sounds like it's getting full and the nozzle kicks off, even though the tank is nearly empty. The problem started suddenly, which makes me think a pressure sensor valve or (like you said a check valve), has failed and it not releasing the pressure.

[cdmintmi]

This might be stupid but are you using a different gas station than you used to use? We have a 95 F250 with dual tanks at work and at some stations we get this and some we dont. I think its just some pumps pump faster than others, and the fuel backs up in the tube leading to the tank. Our old F250 has like a 90 degree bend just after the fuel door and you cant go faster than half way with most pumps. If the fuel/gas gets back the handle they obviously automatically cut off. You think that could be the problem?

[sammy1]

I thought of that also. I have gone to different stations and used different brands of gas and got the same result. It does it even if you just let the gas trickle into the tank, so the problem is definitely with the H3.

[ewilli]

sorry to bring it up again, but it does not seem like an answer has been found. we have an] 2006 h3 with 67k miles. it does the exact same thing. we start to fill up the tank (no matter what station) it goes for a few gallons and shuts off. we have to remove the gas pump all the way and when we do so, it sounds like a jet taking off as the pressure escapes from the tank. we reinsert the pump and it goes for about a gallon or so and the same thing. it is so nerve racking we have not had a full tank of gas in about a month and a half because it takes so long. has anyone found a solution?

[Camou2]

There is a flaper valve in the fill pipe close to the top of tank to keep fuel from sloshing out. This valve can get stuck and will cause the problem you are having during filling up. You can jamb a broom stick or other appropriate tool down the filler nozzle to open it up. Don't know a permanent solution except to have the dealer replace the fill pipe and/or complete tank system.

[pdsq99f4]

It may be your evap vent valve is glogged. Do either of you live on a gravel road by any chance? That gravel dust will clog a vent valve after time.

[turtlesdove3]

Originally Posted by sammy1

I think it's a pressure problem. As soon as you start filling the tank, it sounds like it's getting full and the nozzle kicks off, even though the tank is nearly empty. The problem started suddenly, which makes me think a pressure sensor valve or (like you said a check valve), has failed and it not releasing the pressure.

Rest of the comments too sounds correct but what you have in mind is exactly what's on mine too. I think the gas and air in the pump is causing a pressure which is making the nozzle kick off.