is Alpha1pump needed?

[DickM]

My boat('98 5.0 merc) has a thruhull intake under the boat, and freshwater cooling. The hose from the outdrive pickup is cut off and capped inside the transom. I still flush the boat with water to both pickups,thru-hull and outdrive. The outdrive used to shoot water out the hose that has been cut off in between the outdrive and the transom. I now notice that this is not pumping water out anymore. Does the outdrive water pump serve any other function and does it need replaced or fixed?

 

[crazy charlie]

Re: is Alpha1pump needed?

In your case the pump in the drive is not needed because you have fresh water cooling which your other pump takes care of.If it were raw water cooled the transome hose would not be capped and would carry water to your motor for cooling. Charlie

 

[speed29668]

Re: is Alpha1pump needed?

But doesn't the raw water circulate through the heat exchanger to cool the fresh water? What is cooling the fresh water if the raw water hose is capped off?

 

[crazy charlie]

Re: is Alpha1pump needed?

Follow your sea water pickup and see where it goes to .Thats where your raw water is coming from.Charlie

 

[akriverrat]

Re: is Alpha1pump needed?

someone just got tired of dropping lower unit to change that dang impeller.