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Bilge Wont Shut Off- under galley floor

Anything related to the operation of your boat. Steering, Bilge Pumps, thru-hulls, bottom paint, etc.
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Scurvy Dog
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Vessel Info: Carver 404 2000

Bilge Wont Shut Off- under galley floor

Postby Reardon » June 20th, 2015, 9:08 pm


I have what I believe to be a bilge pump that wont quit running. I am not sure what fluid it is suppose to move, but I think it is related to the forward head. It is under the galley floor board and here is what is really weird. I can shut down all the power (AC and DC), and it still runs.

Anyone know what that bilge goes to and why it would run continuously.


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Vessel Info: 1995 Boston Whaler Rage15
1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glasspar / 1967 Johnson Electromatic 85
1996 Boston Whaler Rage 15
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Re: Bilge Wont Shut Off- under galley floor

Postby waybomb » June 21st, 2015, 8:47 am

If you kill the battery switch and it still runs it must be a bilge pump. There should be some Fuses by the switch. Those are for the pumps. Take them out one at a time until the pump stops. Now you know which one. It's probably a bad float stitch by the pump.
Make sure you put the other Fuses back in!
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572 ci
1995 Boston Whaler Rage
Past - 1988 2807, 1989 4207 Aft
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Re: Bilge Wont Shut Off- under galley floor

Postby AaHubb » June 21st, 2015, 10:29 am

I was going to add the forward shower sump but it would shut off with the main battery switch set to off. Opening the galley floor hatch will give you direct access to the forward bilge pump.
'99 404 CPMY
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After Taxes
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2004 Carver Mariner 360
Lake Simcoe & Georgian Bay,
Ontario, Canada
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Re: Bilge Wont Shut Off- under galley floor

Postby After Taxes » June 23rd, 2015, 8:20 pm

A bad float switch will cause a pump to run continuously. Water has made its way into the switch and it is time to toss the float. Some have a separate float, and if this is you, just identify the float and replace it.

If the float is internal to the pump, then toss the whole thing.

Had this issue on previous boat.
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2004 Carver Mariner 360
MerCruiser MX 6.2
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