I am brand new to this site. been looking at threads for about a week and cant believe all the info i have got from iboats. you guys are a great help. i used the top secret file to fire this old evinrude up (in a barrel) and hear her run but its not cooling. there isn't any water comin out the hole in my lower unit. so my next move is to take the lower unit off and see what the problem is. Impellers?, water pump? i was just wondering if im am going to be able to tell what i need just by looking. and wondering if im going to need a gasket set or anything when i take the lower unit off. any info will be greatly appreciated as this is only my 2nd boat and the first i have had to work on. i am pretty mechanicly inclined but just havnt had much expieience with boats. btw the boat is a 16ft flat bottom john.