Not great with outboards so this question might be a simple one. I have a 1973 Mercury 4hp.. Recently replaced the impeller because there was no water being pushed through the system. Got it running and water is coming out of bottom rear of the engine from a small port (the water is coming out like a spray with air, not a stream). On the left bottom side of the engine is another small port that says "fresh water flush" (which just air is coming out). Any idea what the fresh water flush is for and also should the water coming out of the bottom rear be more of a stream then the spray I have, or is the spray normal? Thanks in advance
