I have a 140tl79r johnson outbaord. I had to replace the timer base and when I did it through the timing way off. It is like the advancing and retarding works backwards now. I installed the new timer base in the same manner that the old one was. The old timer worked the timing correctly but one coil would not fire. All coils are firing now just I can not set the timing. The key way for the flywheel is fine as I have checked it twice already. I don't know where to go with this problem.