2002 C34 MKII, Upon flushing the Jabsco manual head toilet there is waste water that seems to flow back slowly in to the bowl. Is this residual waste water that did not get pumped all the way through the sanitary delivery line to the holding tank or is it something having to do with the head pump itself or ?????? The seacock for the holding tank is closed, she is sitting flat in the slip and the head pump is used in the “Dry” position having use fresh water from the head sink only. As alway, Thanks for any advise and help, Scott
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Junk it
It is the Joker valve. The best advice I ever got from this board is to throw away the Jabsco and replace with a PH II, it will be the best couple hundred you will spend.
It is the Joker valve. The best advice I ever got from this board is to throw away the Jabsco and replace with a PH II, it will be the best couple hundred you will spend.
Pump Strokes
On my old Hunter, it took 15 strokes of the pump to empty the hose to the tank. If you stopped before 15, you left some in the line and if the joker valve was very old, it would slowly leak back into the bowl. Fill your bowl with water sometime and see how many strokes it takes before you don't hear it splashing into the holding tank. In most boats it takes a lot more strokes than you would think to empty the line. Like I said, on my old boat I had a sign that said pump 15 times on the head.
On my old Hunter, it took 15 strokes of the pump to empty the hose to the tank. If you stopped before 15, you left some in the line and if the joker valve was very old, it would slowly leak back into the bowl. Fill your bowl with water sometime and see how many strokes it takes before you don't hear it splashing into the holding tank. In most boats it takes a lot more strokes than you would think to empty the line. Like I said, on my old boat I had a sign that said pump 15 times on the head.
Vent Plugged!
Check your vent line from your holding tank. If it is plugged, it will force waste water back into the bowl and eventually get so pressurized that the tank could burst and the pump will be very hard to pump. Bugs love to build nests in the stanchon that hold the vent holes and plugg up the whole thing. I have had to disconnect the vent line from the tank and use the hose to force water out through the vent holes. fair winds Dave
Check your vent line from your holding tank. If it is plugged, it will force waste water back into the bowl and eventually get so pressurized that the tank could burst and the pump will be very hard to pump. Bugs love to build nests in the stanchon that hold the vent holes and plugg up the whole thing. I have had to disconnect the vent line from the tank and use the hose to force water out through the vent holes. fair winds Dave
Joker valve
That's normal for a joker valve, (after a few months) to let some backflow in. You can replace the valve for about $10, & about 1/2 hour "crappy" labor (for a few more months odorless peace), or you can use more fresh water to get the bad stuff into the tank & continue on with what you've got. There are more options, but these are the top 2 in my (keep it simple) book.
That's normal for a joker valve, (after a few months) to let some backflow in. You can replace the valve for about $10, & about 1/2 hour "crappy" labor (for a few more months odorless peace), or you can use more fresh water to get the bad stuff into the tank & continue on with what you've got. There are more options, but these are the top 2 in my (keep it simple) book.
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