Re: 1987 force modle 507y7c 50 hp
Welcome to iboats edgor17.
THe easiest way is to remove the 2 coils and swap their positions.
Then start and see if the "no spark" condition is now on the other cylinder.
Did the problem follow the coil?
Make sure the mark the coils so you can tell them apart.
Would also help to label all the wires, and take a digital photo so you can use it as a reference.