Black water toilet plugged

You could put some water in it and rock the trailer back and forth so the water sloshes to help break up the plug if it is really bad. we had a Forest River that for some reason allowed the paper to plug up after just a couple uses. I poured water (clean) from a bucket held up high with the toilet valve held open to get some velocity. it took a couple bucket fulls, but it finally broke up and drained.

After that I had my wife and kid use more water.

Could the tank be full?

Purchase and use a "Flush King".

Flush King - Amazon

Some tank configurations/dimensions are simply shallow and a PITA. Ours is like that and it doesn't take much for a pyramid to build up below the toilet. We need to do a thorough flushing before heading home otherwise it plugs up in no time on the next trip out. An in-tank flusher is better, but if you don't have one a back-flush elbow will help but won't reach everything in there. A wand down the toilet may help.

For a really stubborn build-up of solids in a tank, Liquid Drano will work great. Add about 5 gallons of water and go for a drive to make it slosh around. Tank will be like new after. Have done that twice with ours now. I think it's Thetford that makes a blavk tank cleaning chemical but the outdoor temp. needs to be something like 70F.

Prevention is the best cure. Always add 3-5 gallons of water before using the tank. And don't let it dry out and sit empty at home between trips keep a little water in it.

Like path1, I fill the bowl 3x after dumping and then just use a normal amount of water with use. I settled on 3 bowl fulls by pouring a gallon of water in the bowl and seeing how much water the bowl held. A very full bowl was one gallon.

I also have a Tornado that I use occasionally to help help the tank clean.

If the clog is between the toilet and the black tank, you pretty much do what you would do in a house. Turn off the water, press the foot valve open and use a plunger. If the plunger doesnt work, its time for a snake.

My method is 100% fool proof, is very simle, doesn't cost money, and doesn't make people wait in line behind you while you diddle daddle around washing out holding tanks.

Never dump before driving some distance, or at least around a few corners, even if you leave a camp ground, and drive back in.

When I dry camp in the desert, I need propane and black dump at about the same time. So I get propane first, then dump. 100% fool proof.

Mine seems to be by the black water valve I pull on the valve handle the valve shows it to be open because the rod moves under neath the belly but my question s since the holding tank is full how do I manually pull the flapper valve back without a mess

Thank you

Topic: Black water toilet plugged
Posted By: Happycamper30 on 10/10/15 09:42am

Does anyone know how to unplug a toilet we use Rv'ers tissue.

Happycamper30 wrote:
Mine seems to be by the black water valve I pull on the valve handle the valve shows it to be open because the rod moves under neath the belly but my question s since the holding tank is full how do I manually pull the flapper valve back without a mess

Thank you

So your toilet isn't plugged ?
It's the tank drain valve not opening?

Tank drain valve........you need to access the valve. If you have an enclosed underbelly that means cutting a 3 sided window (access panel) so that you can use a pliers on valve shaft and pull it open then you can repair valve if possible or replace as needed.

I have a 2008 Forest River 5th wheel Cruiser, don't they have a black water cleanout if so where would it be located due to my clogged black water tank.

Thank you,((((Help )))))