how much water should com out of the square port on the back of the engin merc500 50 hp #167277 it does not have eney ore it just spits very little out the square port on the back of the engin .i just put a new water pump in it and i ran it for about a hour but i am conserend about the water.i took out a plug on top of the motor and it spraded water out the top wene ran.it does not have a pee hole thanks jason