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Engine sea cock

Anything related to the operation of your boat. Steering, Bilge Pumps, thru-hulls, bottom paint, etc.
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Topic author United States of America
Bella Notte
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Engine sea cock

Postby Bella Notte » July 1st, 2017, 7:10 am

79 voyager 3326 port engines exhaust got very hot and had to be shut down. It wasn't pumping sea water (freshwater cooled engine). Began trouble shooting at the sea strainer, closed the sea cock and opened the strainer and it is clean. Opened the sea cock (with the strainer still open) expecting water to at least bubble out of the strainer and none did. Is this normal? Shouldn't water run out do the strainer when the strainer is open and the sea cock is open?


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Re: Engine sea cock

Postby Viper » July 1st, 2017, 7:27 am

Normally it should as they are typically at or below the waterline but I have seen some that are above the waterline. If this is the case with you and you're trying to find out if your thru hull intake is blocked, shut the valve off, remove the hose and open the valve. You should get water flow. Don't expect to see Niagara Falls here, it won't be as drastic a flow as you might think. If you don't get water flow, you can try flukshing it out with a garden hose or compressed air.

When was the last time the impellers were replaced? What kind of engines are they.
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AaHubb
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Re: Engine sea cock

Postby AaHubb » July 1st, 2017, 10:28 am

Try using a wet/dry vac to empty the strainer then open the valve. If it doesn't refill quickly try using the blower port on the vac to clear the thru hull.
..Aaron
'99 404 CPMY
SeaDragon
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Topic author United States of America
Bella Notte
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Re: Engine sea cock

Postby Bella Notte » July 1st, 2017, 8:46 pm

Thank you I'll give that a try. Bets trying to remove the hoses like I was going to try. This boat was not made to work on. :)
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Topic author United States of America
Bella Notte
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Vessel Info: 1979 voyager 3326
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Re: Engine sea cock

Postby Bella Notte » July 1st, 2017, 8:51 pm

Gas engines GM350s. Replaced the impels with in the last 60 operating hours. I was expecting a gusher but I will certainly follow up on your suggestion. Thank you.
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RGrew176
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Re: Engine sea cock

Postby RGrew176 » July 2nd, 2017, 2:53 am

Bella Notte wrote:Source of the post Thank you I'll give that a try. Bets trying to remove the hoses like I was going to try. This boat was not made to work on. :)



Most smaller boats are not made to work on. At my age now I will still do some stuff but most of it I will pay to have done. Much simpler for me that way although it does make the wallet a bit lighter.
Rick Grew

2022 Stingray 182 SC

2004 Past Commodore
West River Yacht & Cruising Club

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