I am am a proud new owner of a new 40 etec. Just took boat out for short test run today and had only one slight concern. Water flowing out of engine in back seems weak. What I mean by that is my old mid 70s merc; water shot out at a pretty good pressure and more so at faster speeds. New Etec water didn't dribble out, but little change with speed and hardly seems to come out with any great pressure
so what's normal? I checked owners manual & I would say they draw it like it come out! Ha
The 2, 3, 4 cylinder and the 60° V4-V6 engines utilize a high-volume low- pressure water tell-tale. It has a gentle flow out the back of the engine through a 3/8" diameter tube as part of the EMM and fuel cooling system.
The big block motors are of a different design with a small-diameter high-pressure tell-tale that you may be familar with that sprays a strong but narrow stream of water.
"There is never just one thing wrong with a boat";
-- Travis McGee, main character in a book series by John D. McDonald
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.
The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.