I ran my boat over the weekend everything seem to run very well for the exception of white smoke coming out, it seems to be coming out with the water from the water pump. Being a rookie at this its the hole towards the top but below the motor itself. Its an 87 and I know that it is supposed just splatter. But the white smoke smoke comes out even more at full throttle. I just changed the head gasket resurfaced the head, put new impeller, and thermostat. What's the deal? Any advice would be appreciated.