Are you saying that the coil pack is fine? That if you put it some where else it produces spark?
Have you had the coil out or did you just swap the wiring with number 2 and see what happens?
It may be a spark plug has died.
Could be an injector has fouled.
At worst a valve is leaking/riding for some reason. Or a cracked piston.
You can pretty much rule out computer issues. It will be a hardware issue not a software one.
I would:
- Take the coil out
- Take the spark plug out.
- Compression test it and write it down.
- Plug the coil back in and then put in the plug and look for spark.
- If you have spark that way look at injector or valves (compression)
- No spark, try the coil pack you have been offered.
- No spark, try a new plug - any plug
A mate tried chasing a miss on number 3 for weeks. He changed every thing and was about to try a new computer. I made him take the rocker cover off and check the valves. Problem fixed with a screw driver and a tap with a hammer. The rocker was riding on the valve.
Very slight chance you have done the same. Pretty good chance it is a spark plug playing up.