Good Sam Club Open Roads Forum: Tech Issues: 1995 Bounder Fuel (gas) leak
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 > 1995 Bounder Fuel (gas) leak

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tunabob

California

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Posted: 05/22/20 12:16pm Link  |  Quote  |  Print  |  Notify Moderator

Question, is it ever normal or acceptable for gas to leak out of the top of my fuel tank near the filler hose. We filled the tank and it was topped off all the way. My son parked in front of his house and leveled the RV. It was warm but not really ho out 75 to 80 maybe. The next morning his neighbor knocked on his door and said there is gas pouring out from under the RV. Took me a while to get there, by the time I arrived (2 hours) the leak had stopped but there was a big stain on the street and the from in the filler area was wet and stained. I crawled under and when I pushed on the filler tube with the play in the hanger I got fuel to come out but just a little. I brought it home and this AM there is not a leak. I have a mobile mechanic coming later to access the problem. We did have the tank out over a year ago the replace the fuel pump. Hoses and clamps are new. Thanks.

garyemunson

Reno, Nevada

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Posted: 05/22/20 12:48pm Link  |  Quote  |  Print  |  Notify Moderator

Something is loose. Should not leak.

DrewE

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Posted: 05/22/20 01:49pm Link  |  Quote  |  Print  |  Notify Moderator

If the fuel is coming out the filler solely where the pump nozzle fits, that doesn't sound too off to me; it just means you overfilled the tank and left no room at all for expansion or sloshing. It's not wise to top off to the very tippy top; stopping at the first or maybe second click-off of the pump is appropriate (provided, of course, your filler is arranged so that it doesn't prematurely shut off when there's still many gallons worth of empty space in the tank--if it does that, it usually means the gas lines from the filler to the tank are not properly routed or are pinched or something). Besides the possibility of gas coming out, this is a good way to harm the vapor recovery system by having the recovery canister be filled with liquid gas.

If it's leaking from the hose or connections between the hose and other parts, yes something ought to be fixed: either a loose connection or a worn or damaged hose, most likely.





MEXICOWANDERER

las peƱas, michoacan, mexico

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Posted: 05/22/20 02:01pm Link  |  Quote  |  Print  |  Notify Moderator

Only for temporary Emergency


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Gdetrailer

PA

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Posted: 05/22/20 02:10pm Link  |  Quote  |  Print  |  Notify Moderator

DrewE wrote:

If the fuel is coming out the filler solely where the pump nozzle fits, that doesn't sound too off to me; it just means you overfilled the tank and left no room at all for expansion or sloshing. It's not wise to top off to the very tippy top; stopping at the first or maybe second click-off of the pump is appropriate (provided, of course, your filler is arranged so that it doesn't prematurely shut off when there's still many gallons worth of empty space in the tank--if it does that, it usually means the gas lines from the filler to the tank are not properly routed or are pinched or something). Besides the possibility of gas coming out, this is a good way to harm the vapor recovery system by having the recovery canister be filled with liquid gas.

If it's leaking from the hose or connections between the hose and other parts, yes something ought to be fixed: either a loose connection or a worn or damaged hose, most likely.


[emoticon]

There is something wrong about this statement..

Even IF the tank has been overfilled, it should never leak, especially not at the filler cap which sometimes on older vehicles had a check valve to let air in. Older vehicles often had a vent at the top of the tank which had a small vacuum line run up to the engine compartment to a vapor recovery tank lined with charcoal that would absorb excess fumes from the tank, that tank was way above the filler neck. Those fumes then were slowly introduced to the engine while it was running.

Newer vehicles have similar vent on top of tank but the vapor recovery system is often located near to the tank just above the tank but lower than filler cap.. This setup, you can accidentally swamp the vapor recovery system if tank is overfilled but the LEAK would not be at the tank.

Fuel systems are a "sealed" system and have been since well before the 1970s, fuel and vapors stay IN and when you use the fuel there is a check valve in the system which allows AIR to enter the tank. When vehicle is not running the check valve that allows air in must close.

Newer vehicles add to the system by checking the tank periodically for LEAKS via a vacuum/pressure test, don't get the filler cap on correctly you will get a CEL or if equipped a filler cap light..

OPs MH needs looked at to find and fix the leak which is most likely a loose hose clamp or rusted out filler pipe.

Matt_Colie

Southeast Michigan

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Posted: 05/22/20 03:16pm Link  |  Quote  |  Print  |  Notify Moderator

Bob,

Those of us with classic coaches (read OLD) deal with this all the time. I will bet you that some of the rubber in the fuel system is shot. Actually, two things, that is a sucker bet and it is probably all shot. It goes bad just like tires. It will age out no matter what you do.

What to do about it?? Only one thing will be successful.

Take it apart and replace all the rubber with new. Those of us with classic coaches have all had to do this. Some of us more than one because the first only lasted 20 year and so I got to do it all again. This time I was sure to use alcohol tolerant materials.

Matt


Matt & Mary Colie
A sailor, his bride and their black dogs going to see some dry places that have Geocaches in a coach made the year we married.


naturist

Lynchburg, VA

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Posted: 05/22/20 04:49pm Link  |  Quote  |  Print  |  Notify Moderator

It is never acceptable or normal for gas to leak out anything like that. It is a fire hazard, plus it tends to rot asphalt creating potholes. Sounds like rotten rubber to me, too.





Egor'sRV

Dallas,TX,USA

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Posted: 05/23/20 08:41am Link  |  Quote  |  Print  |  Notify Moderator

Have to agree with above.
This sounds similar to what I found on my '98 Bounder.
Gas leaking at different times, mostly on full tank. Had trouble with generator dependability. Pulled tank and found rubber gas line to generator rotting with cracks. Replaced with new line, fixed both generator problem and leaking of driveway.


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MrWizard

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Posted: 05/23/20 11:52am Link  |  Quote  |  Print  |  Notify Moderator

On the Ford chassis the tank is behind the rear axle, the filler inlet is behind the license plate ,
The height drop from gas cap to tank entry is very shallow, with a very long filler inlet hose,
Topping off the tank at the inlet, results in an Over Full tank and 8 ft of inlet hose that is full of gas, it Will leak, No IFS ANDS or BUTS


Radiate The Happy
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Connected using Verizon and AT&T
1997 F53 Bounder 36s


MrWizard

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Posted: 05/23/20 11:53am Link  |  Quote  |  Print  |  Notify Moderator

Double post

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