The pump out boat arrived and I began to pump the tank as always. We are live aboard and are pumped out once a week. Mysteriously, despite huge suction, the tank would not release its contents. We tried the overboard discharge and despite the discharge pump coming on, nothing was discharged.
The tank is 3/4 full, the vent line appears to be clear. If I run the discharge pump and then open the deck pump out air rushes in leading me to believe the pump is generating suction. My only guess is a clog somewhere in the system.
Any advice will be appreciated. Howard
Magic, 1996 Grand Banks Europa
Westport, CT and Stuart, FL