Did you check the tank's vent? Sometimes little critters make a mud nest in the vent.
It is conceivable that a blocked vent would limit the amount of flow out of a full tank. Martin Calypso 1971 C&C 43 Seattle -----Original Message----- From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Walt Dickie Sent: Tuesday, August 07, 2012 10:15 AM To: C&C list (cnc-list@cnc-list.com) Subject: Stus-List Water pressure problem My C&C 110 has two water tanks, one under the port settee and one in the v-berth. A valve under the sink in the galley allows me to turn the supply from each tank on and off, but with the exception of the 6" or 8" of tubing exposed at the valves almost all of the rest of the plumbing for the system is really difficult to get at. The outlets at the tanks themselves are at the base of the tanks and are completely inaccessible with the tanks in place. At the beginning of the season no water would flow from the port tank using either the pressure system or the foot pump, which seems to be connected directly to the tank or its outlet line. I didn't care too much about this since we don't usually use much onboard water and the forward tank seemed to be working fine. But since I couldn't easily drain the part tank, I left the water in it. Yesterday out of idle curiosity I turned on the port tank, turned off the forward one, and used the foot pump. Water unexpectedly gushed out. When I turned on the pressure system it came on and ran continuously, which it doesn't do when getting supplied from the forward tank, and although water now comes out of the tap the flow is feeble. The flow from the foot pump seems normal. It feels as though there was some kind of blockage in the supply line from the port tank and that the blockage has somehow been reduced. I drained the port tank today while I could, but now I'm wondering about a fix -- some what to clear the "blockage," if that's what it is. I don't want to rip the water tanks out to get to the supply lines, but it seems like it would be worth some effort to clear them. I've never dealt with the boat's plumbing system before so I'm clueless. Suggestions? Walt Dickie C&C 110, Hull #97 DuSable Harbor, Chicago _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
