Originally Posted by Cpt JCote
Ok, no where to turn...pump wouldn't shut off: replaced duckbills, bowl is holding water, double hose clamps, felt suction of pump (so I assume bellow is good) replaced vaccuum tank (properly sealed fittings to tank and hoses....pump still is running.
How old is the system?
How long have you had a VacuFlush toilet on this or any previous boat? Several years, or is it a "new" system for you?
Did the trouble start before or after you replaced the duckbills? Why did you replace the vacuum tank? Is the pump running non-stop, or intermittently between flushes?
When you flush, are you adding water to the bowl ahead of solids and/or TP? How much? How long do you leave the pedal down?
When, if ever, have you flushed a full bowl of water--even two--through the system? Have you done that since the problem started?