About a month ago I spent 5 days trolling with my 2006 etec 90 hp. I had no issues. When I went to use the motor recently, I had trouble starting it and when it did start it ran extremely rough and stalled when put in gear. When I got it to run it seemed to run okay at wot but when I throttled down it seemed to be missing and running rough. Since then, I have sprayed Johnson/evinrude engine tuner into the intakes, changed prop and added fuel stabilizer. Not much difference. Can anyone suggest what might have made this quick change to my engine?
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08-20-2012 04:07 - edited 08-20-2012 04:09
Your 2006 model has shorter spark plug life than the 2008 and later versions of your motor if you troll a lot. The engine state of tune, WOT rpm, and the engine idle temperature play a big part in sparkplug life on your model engine. Pull the plugs and see what the gap is and if the electrodes are getting worn. If any doubts, index, gap, and install new ones. The correct plugs and gap are printed on the silver EPA label near your serial number tag.
When was it serviced by a trained tech last? Have you checked the spark plug condition and gap? What software version is installed? You may need your dealer to check these items out and get a computer report of the engine history. In addition, ask your dealer to use the serial and model number of your motor to find out if there were any service bulletins or recalls that apply to your outboard.
The motor being around 6 years old it should at least have had 2 complete servicings by a dealer.
"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.