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Discussion in 'Sport Cruisers' started by Sam bevilacqua, May 19, 2019.
vacumflush will not flush ,the pump will not stop, will not flush water.
Need a little more info you step on the pedal does water go in and vacuum pump not stop? IF so you will need to replace the ball , gasket , and water inlet valve in the toilet its a kit.
So the bowl will overflow with water if you hold the pedal down?
The hose seems blocked....What was put down it?
Sounds like you are not building vacuum. Cracked bellows or a major leak in the system.
+1 If your pump does not stop then you probably are not building up a vacuum. That leads to a leak in the system. Could be something as simple as the seal around the ball in the head or something else like a leak in the line.
There is also a pressure relief valve on the top of the tank that could leak.
Was it working normally last year? Duckbills need changing. They get hard and crusty over the off season and will not seal. No seal -no vacuum. No vacuum - no flush. Same problem last season for me. Took out pump assembly and disassembled. Had the wife run to WM to get duckbills (need 4) while I cleaned unit up. New duckbills installed and problem solved. Some rubber gloves are an essential tool.
+1 - could also be something stuck in the duckbill not allowing them to close. That's a discussion to have with guests visiting the boat. We regularly inform our guests that basically nothing goes into the head that does not come out of you - except for a small amount of our special toilet paper
There’s a lot of parts (particularly dirty seals) and/or circumstances (i.e. a plugged waste line) that can occur in the vacuflush system that could create this situation. I would encourage you to do a search on the forum and gain an understanding of your system so you can troubleshoot it. My vacuflush is somewhat temperamental and, over the years, I have replaced all of the seals in the toilet and foot petal, but I have not had to replace the duckbills and would certainly hesitate prior to tearing into those before troubleshooting to identify potential other causes of the problem.
Duckbills are the number one cause of problems with the vacuflush. I would start with those as they are the cheapest part in the system, and you should have an idea of their condition before going any further.