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Old 07-05-2019, 11:35 AM   #1
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2016 Keystone fuzion 325 Grey water issues

We had a house fire and bought a trailer to live in while the repairs are being done on our house. We moved in this week and the grey water tank seems to have filled up but isn't draining......thinking it is going to the black water tank? Anybody have any tips that has this trailer?
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Old 07-05-2019, 11:51 AM   #2
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Where do you plan on dumping your tanks? There is no overflow connection between the black and gray tanks.

We have a Road Warrior 427 and when the gray tank fills you can hear it gurgle in the shower. To dump the tank you need to find where you are going to dump it. After you have setup to dump there should be a valve located close to the sewer hose connection, both the black and gray tank valves should be close together.

There is a Fuzion sitting across from us in the campground right now and can look at their unit to see where their dump valves are if you want.
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Old 07-05-2019, 12:22 PM   #3
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Hi ! Welcome to IRV2! We're sure glad you joined the gang!

I'm not familiar with your rig so can't help a lot. Are you connected to a .sewer dump? The gray tank will fill up quickly and will probably need to be dumped every 3 or 4 days if you are using the shower if the dump valve is closed. If you are hooked up to a dump you can leave the gray tank valve open.

The black tank valve should be kept closed until you are ready to dump. It's VERY important that you keep water in the black tank!

Good luck, happy trails, and God bless!
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Old 07-05-2019, 03:47 PM   #4
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Many larger RVs have more than one Gray tank. It should be obvious by looking underneath if it has a second dump line. It will not be plumbed to the black tank, although some bedrooms will have a sink that can be plumbed to the black tank.
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Old 07-05-2019, 04:52 PM   #5
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We have the trailer on our property and had a temporary tank installed, there seems to be a black and grey handle by the hook ups and another grey water handle for the kitchen sink under the slide. We opened the grey for the kitchen and ran the water it comes out just fine. when the main grey handle is pulled nothing happens. Could it possibly only be able to dump if the black is dumped also? Seems like a pain if you have to dump sewer everytime you need to empty your grey water....
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Old 07-05-2019, 06:05 PM   #6
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Rubber up, open the valve and shove a snake up the drain pipe.
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Old 07-05-2019, 06:16 PM   #7
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Galley (kitchen grey) has it own dump valve and drains fine
Black & grey have individual dump valves that go to common drain header

Black drains OK but grey doesn't
Grey dump valve is NOT opening
grey tank outlet is blocked (could be cut out disc that fell inside tank during construction and is not lodged in tank outlet)

Either will need to access the grey tank dump valve and verify it is/isn't opening
If it isn't..could be actuating rod has come loose/cable connection has come loose etc----
If it IS.....will have to remove valve and then check tank outlet

Both scenarios will require opening up underbelly cover (cut a 3 sided window) and get ready for a wet/messy experience if removal of valve is necessary
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Old 07-05-2019, 08:31 PM   #8
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How much water did you put in the main tank? Due to the size of mine and possibly that the bottom bows a little it can take a couple minutes to put enough water in it to see some come out.
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