I have an 86 90 hp mariner tower of power that last weekend when we were fishing I went to go from trolling to move and when I dumped the throttle it would not go over 2000 rpm and 4ish mph. I did some testing and found I lost spark on cylinders 1 3 5. I decided since this is 34 years old I would replace the stator trigger and both switch boxes. It fired up easier than ever on muffs. Now I have no spark on cylinder 2 with the new electrical hardware. I am open to suggestions. I swapped plug wires and it made no difference. I also got a used good coil from boat shop and he said he doubted that would fix my problem I think this is intermittent With timing light hooked up it sometimes flashes but not consistently.

I swapped stator back and got spark back on all cylinders. Still no power I dont think it is fuel because I rebuilt pump a couple years ago and when you choke it when wfo it about kills it. Any ideas greatly appreciated