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Old 11-21-2017, 02:47 PM   #1
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Fresh Water Intake Issue

When I try to fill up my fresh water tank it will take water in for a few seconds and then start spewing out the intake and not fill up. What could be the cause of this?
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Old 11-21-2017, 02:54 PM   #2
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Try starting the water a little slower, then gradually increase the flow.
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Old 11-21-2017, 02:58 PM   #3
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Check for kinks in the intake hose to the tank and/or the vent hose.
Many reports here of problems with both from the factory.

Also be sure it isn't already full.
You wouldn't be the first.

Don't trust the sensor indicator lights.
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Old 11-21-2017, 03:14 PM   #4
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X2 on post #2 and 3.
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Old 11-21-2017, 06:38 PM   #5
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jsmart, I learned that a lot of our fresh water tanks sit above the frame, on the floor and the fill port is just slightly higher than the top of the tank. Any sag in the fill tube traps water while filling and requires the weight of incoming water to push the trapped water up hill and into the tank. If you can get to the fill tube and there is a sag and you can eliminate it, then you are good to go. As an alternative, make yourself a fill adapter hose about 5 feet long that you can carefully insert into the fill tube and push it in so it goes through the sag. I say carefully because a lot of these fill tubes have a spiral support rib that you can feel while inserting your new adapter hose. Turning it while pushing it in helps get past these ribs. Not hard. It is so common that Amazon also sells a device called Secure Fill for about 30 bucks that helps with the sag problem. There is a YouTube video about it. You have several options.
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Old 11-23-2017, 06:59 AM   #6
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You can make a tank fill tube, by cutting one end off a washing machine hose. It should fit nicely.
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Old 11-23-2017, 10:59 AM   #7
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If you search your problem here on this forum,,, you will find several good ideas !!!
Air vent must be clear !!!
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Old 03-21-2018, 03:25 PM   #8
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Quote:
Originally Posted by jsmart View Post
When I try to fill up my fresh water tank it will take water in for a few seconds and then start spewing out the intake and not fill up. What could be the cause of this?


I had the same issue with my 2018 Forester. Very frustratng. I found a gizmo online that cost between $35 & $50 (that also had a youtube video) that looked like a freshwater cap with a hose attached & vent holes drilled in it...a possibility.

Today at Tractor Supply I found this for $10 and it workedlike a charm. It shoots a very thin, powerful stream of water down the hose with very minimal backflow. A winner!!
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Old 03-22-2018, 09:31 AM   #9
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I would never stick that thing in my fresh water fill !!!
Nothing is going to work if air vent is not clear !!!
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Old 03-23-2018, 10:39 AM   #10
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My 3011ds did same thing. Pulled up rear matress and removed plywood cover. Found the intake hose was lower than intake port on the holding tank. There is not much height difference from outside fill port to the holding tank port. So I framed up a support for the hose and solved my same problem.
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Old 03-23-2018, 11:14 AM   #11
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On my 2018 3011 i have a black plastic corrugated fill hose. I did not see a vent. IMHO the corrugated pipe acts as a speed bump for water and traps air while going down the 30" length. When it can't hold any more air the tank belches out the fill hose and you have a face full.
I just turn the water on slow and go do something else for a while (like dump the tanks). It doesn't take long, running it slow allows more of the trapped air to flow out while filling.
Since i don't fill the tank often it's no big deal for me, if it was I'd install a smooth bore hose.
I just put ten gallons in mine for a thousand mile trip next week for flushing only. I don't know what others do but we drink and cook with bottled water 100%.
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Old 03-27-2018, 11:04 AM   #12
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We found that if you open a faucet inside it will let air escape and it will fill the tank faster. Don't have the water pump on, just open the cold water faucet at the sink or bathroom. We also bought an attachment at Camping World to fit on our hose that allows it to go farther into the fill hose and that helps as well. It cost about $3 or $4.00. I got the last one in the store so they must be popular. We have a 2018 3011 DS.
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Old 03-27-2018, 11:17 AM   #13
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We found that if you open a faucet inside it will let air escape and it will fill the tank faster. Don't have the water pump on, just open the cold water faucet at the sink or bathroom. We also bought an attachment at Camping World to fit on our hose that allows it to go farther into the fill hose and that helps as well. It cost about $3 or $4.00. I got the last one in the store so they must be popular. We have a 2018 3011 DS.
It is very easy to make your own filler hose,,, from a pic of garden hose or an old Washing Machine hose !!!
I have never tried to leave faucet open,,, but will try leaving outdoor shower faucet on,,, and see if that makes a difference ???
For years I have just filled slowly while I do something else !!!
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Old 04-17-2018, 10:39 AM   #14
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Try #2. This works!

I described the problem to an Ace Hardware staff member in Taos, NM. He recommended this. It is non-toxic & didn’t taint the water’s taste.
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Old 04-17-2018, 10:44 AM   #15
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Originally Posted by jsmart View Post
When I try to fill up my fresh water tank it will take water in for a few seconds and then start spewing out the intake and not fill up. What could be the cause of this?
Turn the water flow down...
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Old 04-17-2018, 10:54 AM   #16
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Originally Posted by vicap View Post

I described the problem to an Ace Hardware staff member in Taos, NM.
I've been in that store...

About 10 years ago when I still had my old Coachman, somewhere along NM64 near Cimmerron my entrance door flew open and the window smashed out on it.

Of course, it was raining, so I put a garbage bag over the door for the rest of the drive to Taos.

And another 'of course'...it was Memorial Day weekend, so no RV places open.

But that Ace Hardware was!

I took the window frame out and went to the Taos Ace Hardware and they cut a piece of plexiglass to fit!

I also bought a can of white spray paint and 'frosted' the inside of that plexi.

I never did buy new glass for that...you could bounce a rock off of it and it wouldn't break!

You can see it in this shot (last campout I ever took that Coachman out):
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Old 04-17-2018, 10:57 AM   #17
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The people who stated the vent tube has a dip in it that holds water preventing the air from coming out are correct IMHO. I use a Camco 22484 water bandit to fill the fresh water. It seals to the fill port I.D. You'll need a double female GHT connector as well to connect to your hose. It will blow out the blocked vent after a couple minutes and continue to fill all the way up
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Old 04-17-2018, 01:19 PM   #18
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I too have a difficult time filling the fresh water tank. So with all the feedback here, I decided to investigate. It turns out that I have two bends in fill tube. The first is 90* down from the fill port then after just a few inches, 90* right and into the top of the tank. I think it is just the dynamics of the water flowing through the corregated hose and making two 90* turns that is causing the “log jam”. So I made a filler tube out of “stuff” that looks very similar to the big buck “device” that was referenced. I can get it 1/2 way down the first 90* which helps but just decreasing the fill rate helps the most.
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