Leaving tomorrow for a week and a half trip and I went to drain the black water tank and nothing would come out. It was recently de-winterized and we havent really used it except for my kids to go number 1. When I look down into the tank through the toilet there appears to be some kind of solid sludge which is why it probaby wont drain. Any ideas what this could be? I could take it back to the people who de-winterized it but every time they work on it there is something else that is wrong with it.

Put twenty pounds of ice cubes and 5 gallons of water down the toilet. Then take the trailer for ride. Water and ice should break up what's in the tank.

Happened once to me, I think the last use left a wad of toilet tissue which washed to the exit gate and dried up to make a plug. I filled the black tank to about 1/2, dumped in 4 oz or more of PineSol, let it sit a few hours, then drove it around a bit and flushed. Everything came out fine.

Good suggestions!You need to use allot more water never leave waste in the tank. Waste should be under liquid at all times. Never leave the dump valve open at a full hook up site. Only open to dump every few days as necessary.

I think this is more than just toilet paper or left over residue. I can visibly see a thick sludge in the tank. I alway flush the toilet to add water to the tank before using it.

HELP !!! | Good Sam Community

blams2004
Explorer
Jul 03, 2013
Could also be a stuck valve. You pull the lever and the door stays closed. Try the above first but if those remedies do not work. You may be looking at replacing the valve.
nitrohorse
Explorer
Jul 03, 2013
Mixer

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Mountainrunner1
Explorer
Jul 03, 2013
I think this is more than just toilet paper or left over residue. I can visibly see a thick sludge in the tank. I alway flush the toilet to add water to the tank before using it.
sch911
Explorer
Jul 03, 2013
Good suggestions!

You need to use allot more water never leave waste in the tank. Waste should be under liquid at all times. Never leave the dump valve open at a full hook up site. Only open to dump every few days as necessary.
kalynzoo
Explorer
Jul 03, 2013
Happened once to me, I think the last use left a wad of toilet tissue which washed to the exit gate and dried up to make a plug. I filled the black tank to about 1/2, dumped in 4 oz or more of PineSol, let it sit a few hours, then drove it around a bit and flushed. Everything came out fine.
handye9
Explorer II
Jul 03, 2013
Put twenty pounds of ice cubes and 5 gallons of water down the toilet. Then take the trailer for ride. Water and ice should break up what's in the tank.

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