ZZ13
Well-Known Member
Dang. Typed all that on my iphone with my thumb and darn it, WDC beat me to the punch. Ha!
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The seacock lets on the sea water into the boat. It travels through the strainer to filter out sea crap to protect the engines. A sea water pump then moves it through the cooling system. There is also a separate pump called the water circulating pump on the engine. This pushes cooling water through engine block. In sea water cooled engines it's the same water the seawater pump is sucking into the boat. In close cooled systems it moves antifreeze mixture through the engines. On those systems a heat exchanger is used to take the heat out of the engines and the seawater only goes through the heat exchanger to take the heat of the engines out of the boat.
The strainer is below the water level of the sea. So, yes, if you open the strainer with the seacock open you should start sinking the boat.
The bilge pumps are simply safety nets should too much water ever get in the boat. They have float switches connected to them that turn on the pumps once the float up to get two contacts inside of them to touch and pass current to the pump.
i have two bilge pumps as well in my engine compartment, in every boat, they have nothing to do with the engine cooling water. you might not have enough water to trigger the float in the pump or maybe the pump is no longer functional. as with any machine, even new it might be dead.
you most likely have closed cooling as most newer, larger boats do. in this case it was mentioned before how that works, sea water does enter the boat and exit through the exhaust. this should be happening all the time when the engine is running, when you opened the sea strainer it should have poured water into your boat, something is blocking the hose or the intake under the water line. you may need a diver or at least a snorkel to take a look at it.
How long can you hold your breath?
if you have water in your bilge, try to look at all the hoses to see if there is a drip, it may increase when the engines are running but either way you need to get water into that engine before you start it again, i would bet the impeller is burnt up too as it needs to run with water or it will melt. it is usually just hard rubber although i don't know on your engines.
good luck and feel free to ask anything. congrats on the new boat too, I love those 320's.
Dang. Typed all that on my iphone with my thumb and darn it, WDC beat me to the punch. Ha!
I just reread your last post and think I see the confusion. Your manual is talking about the seawater cooling water discharging through the side of the hull. That is why it says not to run the engines if there is no visible sign of water discharging. That would mean the seawater cooling path for the engine is blocked, which means the engine would overheat. That's the condition you are in. I agree with a previous post. Time to have a mechanic look at it.
You can grab your owner's manual here: http://www.searay.com/Page.aspx/pageId/10411/Owners-Manuals.aspx
Looking at it (section 2 page 10), the port side drain is from the wet bar and bilge vent box. If you have a manual bilge pump (in addition to the automatic and switched which both drain out the starboard side), there will be a second drain on the port side.
i figured I got the seacock thing backwards after I reread my post.also for the other poster the seacock was stuck in the open position..I was trying to close it for the strainers ...
also is it possible to get the DVD player and tv audio playing thru the boats speakers. ?