I am an I/O owner but I have a friend with a Johnson 220 V6 he was having trouble getting the water to for lack of a better term pee with a full stream it comes out on muffs but not with much force. When we drained the lower fluid it was a little milky. After taking the lower unit off and inspecting everything we could think of and replacing seals and impeller we re assembled the lower unit reinstalled it and tried it again but ended with the same result, boat peed a little but not enough to keep from over heating and we then drained the fluid and it was milky. Did we miss something? Maybe a seal? Any ideas out there on what our net step should be? He has a manual and he is going to look it over but thought I would see if anyone had any ideas.