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Old 08-19-2015, 04:16 PM   #1
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2000 31' Excella
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Gas nozzle keeps shutting off when filling tank

Not sure if it is a problem needing to be fixed or ?????. But sure is frustrating. When filling my gas tank I have to have the gas nozzle set to slow or very slow or the gas nozzle does an auto shut off. Is this just my m/h or do others have this problem as well? If it is only my m/h with this problem, what the fix?
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Old 08-19-2015, 04:43 PM   #2
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Check for obstructed air vent in your fuel tank or immediate connections to it. Had that issue in a car with a twisted vent hose. Fuel signed up in the full tub instead of venting air out to the top of the fill tube where the gas nozzle can vent air out. Look for a crimp in a hose.


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Old 08-19-2015, 04:54 PM   #3
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It is the nozzle not your vehicle. Let the attendant know about it.
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Old 08-19-2015, 05:01 PM   #4
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gas nozzle keeps shutting off when filling tank

Most of the older MH do it. The original tanks weren't vented and used a vented cap....

There are several threads in it and I chased for a while thinking it was a kinked filler pipe. Modern pumps just plane deliver too fast for old non-vented tanks
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Old 08-19-2015, 05:04 PM   #5
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it might have an anti-siphon spring in the fill tube to prevent fuel theft.
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Old 08-19-2015, 05:37 PM   #6
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Both my F250 and RAV4 do the same thing. The F250 is mostly diesel bubbles in a crooked tank filler neck. The RAV4 is all crooked tank filler neck, about of the 1/8 tanks worth.
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Old 08-19-2015, 06:27 PM   #7
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gas

Mine is older than yours & it doesn't ever do it. Nor should it. if it happens at different pumps, look for a kink in the filler hose or maybe a clogged vent . Does it happen when tank is very low? If it does I'd look hard at the filler.
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Old 08-20-2015, 06:32 AM   #8
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My 2004 Land Yacht did it on some pumps but not on others. It is fustrating when you have to hold the nozzle to fill the tank! I always thought it was a pump problem.
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Old 08-20-2015, 09:40 AM   #9
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Thanks for the info.
Seems to occur at most stations. Some are worst than others. (Flying J) I can't remember when it didn't happen.
So does the 2005 have a vented tank???
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Old 08-20-2015, 10:18 AM   #10
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Try setting the nozzle on its lowest setting. My Ranger often clicks off if the nozzle is at max flow.
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Old 08-20-2015, 10:49 AM   #11
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Quote:
Originally Posted by Drathaar View Post
Try setting the nozzle on its lowest setting.
I would be happy if I could set it at the lowest setting. But it shuts off. I have to hold onto the flow control below the lowest setting.

I understand that air has to get out for the fuel to get in. So if no air vent then I would suspect the filler hose going into the tank has a kink or is too small. But workhorse wouldn't have let that happen????
So maybe a clogged vent???
Other than that, maybe what I have is what I was supposed to get???
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Old 08-20-2015, 12:56 PM   #12
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May have stumbled upon the solution.
Did a google search and found several RV forums with similar posts.

Problem may be with the vent tube. Apparently all/most chassis have one. comes out of the top of the tank runs along the filler tube to a "T" near the top of the filler tube. overfilling can cause gas to be in the vent tube that gets trapped in a type of "P" trap by a low spot in the vent hose. Gas cannot drain back into the tank and air cannot go up the vent so air goes back up the filler tube causing auto shutoff to click off.

Solution seems to be to realign the vent tube to ensure there are no low spots and drain away gas in vent tube. Several owners did this and the problem went away.

Seems reasonable to me in that I believe that the gas tank is right up between the main chassis rails and filler and vent line would have to be horizontal at some point to fit under the floor and get to the top of the gas tank.

I'll have a look and follow up on findings later.
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Old 09-07-2015, 02:45 PM   #13
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I used to service pumps & Rav 4s are notorious spillers. Seems the tank is pretty flat w/ the filler.
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Old 09-07-2015, 02:52 PM   #14
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play with angle if you don't have nozzle in far enough or angled too straight it can cause problems
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