Plumbing Butt Pains

[danshere]

I have a 2021 Volante 370Bh and have owned it 2nd hand for 3 months. I live in it full time and have had a toilet problem ever since day ONE.

I can empty the blackwater tank, using the spray flush system the entire time I am emptying it. I close the main valve on the blackwater tank outside go inside and hit the foot pedal and the neck from the top of the tank clear up to the toilet bowl will fill within 15 seconds. ITS STOPPED UP. I can plunge it and it will bubble and splash water everywhere, but the water quickly goes down. I can hit the foot lever again and DARN, within 15 seconds the toilet bowl is filling again.

Dont have a clue whats happening!! Any ideas you all?

Could this be the infamous "pyramid plug" which is a pyramid of paper has developed over time and is now tall enough that the top of the pyramid plug is blocking the neck opening from the toilet down to the tank?

[Lloyd]

It sounds like a plug of some kind. Hopefully it's not one that some clown at the factory created. It's possible they left something in the line that is causing the problem, or the pipe is to long going into the tank from the toilet. I've heard of just about anything possible happening.
Hopefully it's not that serious and it's a poop pyramid. Highly unlikely to be a toilet paper pyramid. That stuff breaks down pretty fast.
A garden hose down the toilet will be your best tool if it's a poop pyramid. If you could get some thing down the pipe on the toilet so you could see down there it would sure help.

Good luck. Let us know what you come up with.

[Papa-T]

Yea could be a piece of plastic from cut out of black tank. I’d run a garden hose up from outside. If you could find a camera like this one from Amazon it might help too. Let us know the problem.