I fired up my '87 OMC 3.0 inboard with muffs yesterday, but immediately saw water pumping out the side of the engine through an valve opening. I had the boat winterized and I suspect that the shop had removed the hose that was hooked up there to drain the water but forgot to reinstall it. My questions would be where does the other end of the would-be hose get hooked to, and where could i buy it? Here's a pic of the opening, in case anyone can help me out.