I have a 96 50 hp merc four stroke. It sat for about a year. pulled the carbs since number 2 had a stuck jet and the other had a problem as well. 1 and 4 were ok.
Cleaned all carbs Put it all back together and now no spark on cyl 2 and 3. Switched the coils and 1 and 4 still ran fine but 2 and 3...
