So I have some holding tank
issues and I'm at my witts end, hopefully someone here can help!
Here is the breakdown:
Recently bought a San Juan
34 sailboat. The head
was pretty new, about 1 year old with very little use.
configuration is the head
discharge goes through a vented loop mounted near the top of the deck
level, then back down into the holding tank
. The holding tank out goes to a Y Valve. The Y valve either has a hose connected directly to deck
pump out, or the other side goes into a macerator pump, then to the ocean dischange valve. There is also a small 5/8 clear hose coming out of the tank that leads to a vent thru hull
near deck level.
We used the head for a bit and seemed to work fine. But now any liquid flushed comes back into the bowl bubbling up within about 2 minutes. We tried to pump out the tank and the Y valve was set to the correct position for this. However when we tried, it only created a vaccum and would not pump out any actual waste. I thought this meant air could not get into the tank to displace the waste... So I disconnected the clear tube from the thru hull
vent which was corroded and very old. I ran the hose outside to fresh air to air could get in. Tried to pump out again, still just created a vaccum and no waste came out. Then when I tried to pump the head with the vent hose disconnected, waste came out of the vent hose!
Right now my plan was to start disconnecting hoses to look for a clogged one and replace it. Also replace the vent hose and thru hull
. I am thinking of disconnected the head outlet at the Y valve so I can at least get the thing pumped out directly. However I'm trying to figure out how to do this without spilling sewage into the bottom of the boat!