Toilet won't flush

I got the trailer to a dealer that charged me for an hours work and said the black tank drained just fine. The service manager gave me some advice to wait for the tank to be full to drain it the next time. Also to use Aqua-Kem, two bottles this next tank full. So I did as he said. It has been more than two week since I got the trailer back and my sink was making gurgling sounds this morning so I decided to try to drain the black tank too. Sure enough it won't drain. There was a little drainage but it quit pretty quick.

I hooked up my trailer to the pickup and towed it over some fairly rough road and up/down some hilly roads. No luck. Then I got the idea to try one of those reverse flush adapters that allow a garden hose to add water to the tank thinking it might open up the drain. It was a Rhino tank rinser from Camco. It leaks at the lower joint on all sides. I tried to make a gasket out of Press and Seal kitchen wrap. This actually worked but it still had some leaking.

Tomorrow I'll go back to the same dealer, schedule another shop visit and ask about the rinser they sell. Next time I get my tank to drain again I'm going to do a lot of flushing of the black tank. It's a good thing I'm recently retired because I wouldn't have time for all this if I had to maintain a job.

If you just want to give the tank a one time rinse or periodic, I used to use one of those wand type rinsers from wally world that you insert down in the toilet. It has a end that twirls around.

That did a good job in my previous RV's that did not have an installed tank rinser.

I read through the whole thread, and Im getting the impression the tank has drained at some point in this process.... at least once. If the dealer drained it, and you used it again, and it now won't drain (again), there's something missing. When the dealer said it drains fine, was it actually empty when you picked it back up? And now you've filled it up/used it again, and it won't drain?

Maybe too much TP and not enough water clogging your system? Somehow over the time period between the start of this post, and today, the system has to have drained.

Mike

As "Walaby" I'm somewhat confused???? First you say the black tank would not drain.

So, you take it to the dealer, he drains the black tank and tells you everything is OK. Now you go back to the RV park and use the facilities.

You then say the sink is gurgling so you try and drain the black tank again but it won’t drain. If the sink is gurgling it’s probably the grey tank that is full not the black tank. Most RVs have the sinks draining into the grey tank.

In addition, if the grey tank is full you would see water coming up into the RV at the low point in the drain system, most likely in the shower basin.

So now you’re ready to go back to the dealer and have him drain the black tank again???

Are you sure how many tanks you have and do you know which valve handle to pull to empty them???? Some RVs have two grey tanks.

I’m not trying to be sarcastic here so please don’t take it that way. What you are explaining just doesn’t add up, sorry????

Get someone in a site near you with a "well loved" RV to walk you through the process. A couple of beers ought to do it.