Had this happen a couple times earlier this week. She will drop a cylinder and run on 3 for a short spell, then come back and run fine. I pilled the tank, checked coils and wires and plugs, all fine.
Some history, 111k on her 2001 clock, all original electronics and a rebuilt J box. Good solid battery terminals and connections. No loose wires at the starter or anywhere near the battery stuff.
I am suspecting that I might have a coil that is possibly loosing its guts, but I will bend a knee to the masses for some input.
Looking forward to see some responses, and with my baby in pieces, I will be monitoring this closely.
Thanks all.
Ride safe Greg