HAS ANYONE HAD THERE MOTOR NOT START NO SPARK THEN START WHEN TRIED AGAIN SOMETIMES DAYS LATER RUNS A SHORT AMOUNT OF TIME DIES AND WONT START UNTILL IT WANTS TO DEALER REPLACED COILS NO HELP REPLACED WIRE HARNESS TO HANDLE NO HELP SET COMPUTER OUT OF BREAK IN MODE NO HELP AT A LOSS DEALER HAS IT AGAIN FOR THE 5TH TIME COULD IT BE THE COMPUTER PS NEW BATTERY ALL CONNECTIONS TIGHT THANKS
when the flywheel starts to rotate as when starting, enough electrical power has to be generated to turn on the EMM (engine computer), start the fuel pump, and deliver the fuel and spark at the right time. The crankshaft position sensor (CPS) tells the EMM that the flywheel is turning.
The best way to troubleshoot the problem is have your dealer start it up cold, while his laptop is connected and monitored for the correct outputs for the sequence of events. Fuel pressure should also be monitored. Another thing to check is if the starter and electrical system are cranking the motor over fast enough.
"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.