I had an old XR6 Merc 150 do that to me years ago and it was the trim switch on the side of the motor. Started doing it during a rain also. Put a new switch on it and all was good. Strange that mine started in the rain though cause that switch gets wet everytime i shut downLast edited by Mainliner61 on March 3rd, 2015, 6:35 pm, edited 1 time in total.