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Old 07-20-2011, 10:23 AM   #1
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Leaking fuel

I have a 2009 jayco octane that builds pressure in the fuel station tank and the generator tank to the point it forces fuel out the fill neck and down the side of the trailer. This in turn fills the cabin with fumes and make everything in and around smell like gasoline. Has anyone had this issue?
The tanks are not over full.
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Old 07-29-2011, 11:45 AM   #2
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Nobody? Im just lucky! Love the trailer but really getting tired of dealing with this issue.
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Old 07-29-2011, 11:51 AM   #3
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I'm surprised you didn't get a "hit" on this one. I don't think there are many toy hauler owners here, but we sure do have a lot of techies! Now that this thread was brought back to the top of the queue, maybe someone will notice it
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Old 07-29-2011, 12:16 PM   #4
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Quote:
Originally Posted by MCMARK View Post
I have a 2009 jayco octane that builds pressure in the fuel station tank and the generator tank to the point it forces fuel out the fill neck and down the side of the trailer. This in turn fills the cabin with fumes and make everything in and around smell like gasoline. Has anyone had this issue?
The tanks are not over full.
Did you ever talk to the dealer about this? often mine will know of a problem and tell me how to fix it myself if I dont want to bring it in.
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Old 07-29-2011, 12:59 PM   #5
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It has been to the dealer at least 8 times, and back to the factory once. It is at the dealer again now for the same problem!
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Old 08-01-2011, 11:52 PM   #6
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Mark I have the same year but this is the first time I have heard of this problem. I will ponder the issue and see I can come up with somethink even if its out of the box...
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Old 08-02-2011, 09:40 AM   #7
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All I can think of is that the tank is real full and the gas needs to expand. How is the vent on the gas cap?
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Old 08-03-2011, 10:48 AM   #8
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The vent on the cap seems to be operating. what I think is my tank is designed wrong. It appears the large vent line is at the same level as the fill tube, and if either or both of these have a "tail" that goes into the fuel there is no way for it to vent. Does that make sense?
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Old 08-08-2011, 06:35 PM   #9
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Yes, that makes sence.
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Old 08-31-2011, 09:06 AM   #10
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I have just fixed that problem on my custom truck bed. No matter how slowly I filled it with with fuel, it would spit back out the fueling nozzle all over the side of the bed. I finally crawled under and found that the vent hose was hanging down a couple of inches below the top of the tank.

Thus, when the tank is full, and the truck moves, some of the fuel sloshes into the vent line, which being lower than the top becomes filled with fuel, just for that portion below the top of the tank. This "plug" of fuel is too much for air to overcome, and thus it doesn't function as a vent.

I shortened the line some, put it on top of the fuel tank...and can fill the tank with the nozzle flowing as much fuel as possible.

So...check the location of the vent line and make sure all of it is above the tank.

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