Check to make sure you got each of the spark plug wire boots back on correctly. I had this happen when I didn't have one "clicked" into place properly.
Previous: 1993 Prostar 205
Red 1998 Closed Bow Ski Boat, PCM GT40, 310 hp, Standard Gear Reduction, Acme 4 blade, Perfect Pass SG/Zbox.
Tyler Ski Club
Be kind. Have fun.