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2004 15HP 4 Stroke water pump

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  • 2004 15HP 4 Stroke water pump

    I bought this motor with the lower end off and in pieces. I found a complete lower unit on ebay. Bought all the gaskets and water pump parts here. After assembly it seamed like the water pump needed a prime to get going. With the motor in gear and moving water comes out of the side weep hole with a strong stream. slowing down and put it in neutral and it stops, sit there for a minute and steam comes out of the side weep hole.
    So today I pulled off the cowling removed the thermostat and the water jacket housing. there is nothing blocking it in there and the hose is clean. I just ordered new gaskets tonight. (tried to order thermostat, page says obsolete part) any help with that would be appreciated also.
    Is there any way the rubber impellers are facing the wrong direction or the stainless tube didn't seat into the water pump?
    I have wanted a four stroke for a long time. Now that I have it I want to take care of it.
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