I am new to this site and I was hoping someone could possibly help me out. I have a Mako 252 with twin 1998 Mercury 150's. One of my motors was running hot at idle speed and the water flow was weak. W0hen I tilted the motor up I realized that water was coming out of the cowling. I took the cover off and on the left side of the motor toward the bottom, water was coming out of a small hole toward the bottom of the block as well as out the normal hole. Any idea what this could be? Also on the other motor, the rpm guage is working on and off as if it loses power. Sometimes when I turn it off and restart it it will work fine. ANyone with some input would be greatly appreciated. Thanks!