Hi, I have a 74 merc 650 (3 cyl) and I have just gotten it running. Changed waterpump and I get a great tattle tale stream coming out but where else does water come out? It doesn't seem to come out anywhere else. The reason I ask is that this is my first outboard and the tattle tail port was all blocked up initally, so could something else be cloggged. I just really want to make sure that their is nothing else blocked up before I take it out on the open water. BTW I am using one of those flusher attachments and have not run it past idle because my repair book said not to. Any replys would be helpful, thank!