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Old 16-05-2016, 14:17   #1
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Water Leak - Fresh Water System

Hello, I have a 2008 Crusiers 395 Motoryacht. We are experiencing “what we believe” to be a leak in the fresh water system. Our bilge fills up with water and while all our bilge pumps work there is always about 2-3 inches of water. In past seasons I have pumped down the bilge several times throughout the season with a shop vac but they fill back up again. Last week we pumped down bilges to dry conditions. We placed the boat in the water for and let soak for over 24 hours and no water penetration from the Hull. The boat also had no water in holding tanks and we did not connect dockside water so we could determine if it was from hull. We had a man in each compartment and didn’t notice any water penetrating the hull through fittings, shafts or bow thruster. We re-launched the boat this weekend and with the dockside water connected after about 24 hours we had about 1-2” of water in the forward and mid bilge. I noticed the faucet handle on the forward shower was dripping or wet to the touch. The concentration of water is in the forward bilge are. This leads be to believe that it could be leaking from behind the forward shower compartment. The only problem I don’t see any access panels. There is a scum line stain right underneath the shower compartment and this water flows through weep holes to the deep forward bilge. We checked connection at hot water tank and that appears to be ok. If anyone has any suggestions on locating a leak from fresh water system it would be greatly appreciated.
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Old 18-05-2016, 19:25   #2
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Re: Water Leak - Fresh Water System

Put some food coloring in the boats water tank. Disconnect the dock water an use the boats fresh water pump. Maybe you can pinpoint it. good luck
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Old 20-05-2016, 00:16   #3
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Re: Water Leak - Fresh Water System

Depending on how your boat is plumbed, shared thru hulls, vacuum loop, etc., If there are unnecessary check valves in you bilge and shower sump pump, debris can leave check valves slightly open. Properly plumbed pumps don't need check valves.
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