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Failing coil

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Athame57:
My number one and four pistons didn't fire up the other day and given that they are served by the same coil suspicion fell there. I lifted the tank, cleaned a few things up and as I had them handy changed all plugs. All was well again after a brief ride. Today I start up nicely but within about twenty seconds things went bumpy with uneven firing and I was mostly back to two pistons, I'm not going anywhere except a workshop like that.
I'm not sure it is the coil though, I expect electrical things to fail in a complete way from the start.
This started one day after a lout on an e-bike pushed me over on the move but I don't really see a connection.
Your thoughts?

McCabe-Thiele (Ted):
Most likely it's not the coil itself but the HT leads, these are affected by moisture & movement.

HT Leads are part of the coil unit on these bikes, it could potentially be the plug caps, might be worth shortening the leads slightly if problem is near the caps.

taysidedragon:
Check the points.

Athame57:

--- Quote from: taysidedragon on Today at 11:49:54 AM ---Check the points.

--- End quote ---
I have electric ignition  ;)

taysidedragon:

--- Quote from: Athame57 on Today at 11:51:11 AM ---
--- Quote from: taysidedragon on Today at 11:49:54 AM ---Check the points.

--- End quote ---
I have electric ignition  ;)

--- End quote ---

😄 OK, check the wiring connections all the way from side cover to coils. Could have been bumped in your "off".

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