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Old 02-21-2018, 06:20 PM   #29
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1965 26' Overlander
1983 30' Airstream 300
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Yeah I have the issue where gas backs up when I am pumping. I have to just trickle it in. It's a drag. Is that because modern gas has deteriorated the rubber hose? Or is it a venting issue? I have looked at it but haven't gotten into it.

Thanks for the tip on rubber hoses up by the engine. Got to do better about fire extinguishers too.
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Old 02-21-2018, 06:31 PM   #30
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Originally Posted by jkaftan View Post
Yeah I have the issue where gas backs up when I am pumping. I have to just trickle it in. It's a drag. Is that because modern gas has deteriorated the rubber hose? Or is it a venting issue? I have looked at it but haven't gotten into it.

Thanks for the tip on rubber hoses up by the engine. Got to do better about fire extinguishers too.
The very same problem afflicts most of us. The filler hose does a 45 degree right off the bat, followed by a couple of 90's; with the speed of modern pumps, especially my diesel pumps, and it can be a PITA. Luckily it is rarely cold when I fill up.😉

Change those fuel lines....now!

Cheers
Sidekick Tony
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Old 02-22-2018, 04:57 AM   #31
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1984 27' Airstream 270
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Originally Posted by jkaftan View Post
Yeah I have the issue where gas backs up when I am pumping. I have to just trickle it in. It's a drag. Is that because modern gas has deteriorated the rubber hose? Or is it a venting issue? I have looked at it but haven't gotten into it.

Thanks for the tip on rubber hoses up by the engine. Got to do better about fire extinguishers too.
The large diameter rubber hose on the filler neck should handle modern fuel OK. You dont want to buy any of that stuff, it is extreamly expensive. I had to buy some for one of my Argosys and I only needed 6" and I had to buy a minimum of 3'. I cant recall the price but it was over $100, 15 years ago.
To fill mine I tilt the nozzle toward the front and if I am lucky I can fill at full speed without it kicking off. Other times I have to go at 1/2 flow.

For engines with a carb, the fuel tank hoses that are a worry, there should be 4 of them of various lengths. 1) Fuel to fuel pump or Throttle Body. 2) Fuel return from fuel pump or Throttle Body. 3) Fuel to the generator 4) tank vent hose.
Newer rigs may have another hose for the fuel vapor trap?

There is also a medium diameter vent hose that goes to the filler neck from a port on the tank near the inlet.

There will also be some short sections of hose above or near your rear axle. They splice the steel fuel lines from where GM left off and Airstream took over
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Old 02-22-2018, 05:36 AM   #32
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Wayne,

Fortunately now days you can buy the filler hose by the inch!

Filler Neck Supply sells pretty much anything you would need for refurbishing your tank filling system.

Brad
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Old 02-22-2018, 06:49 AM   #33
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Wayne,

Fortunately now days you can buy the filler hose by the inch!

Filler Neck Supply sells pretty much anything you would need for refurbishing your tank filling system.

Brad
And that price is a lot better than what I paid!
Mine was NAPA #1135 2 1/4"
and it is now $30 a foot. I still have 1 1/2 feet of it.
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Old 02-22-2018, 03:15 PM   #34
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I was able to move my gas tank about 6" closer(forward) to the filler neck. Fills a little faster. Also, when I can, I park at the pump, so the the tank is a at a lower angle that helps a lot
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