1971 CB450 random spark on right

[cancb550]

Hi
Bringing back back to life this 71 CB450. Right plug sparks whenever it wishes to and skips whenever it wishes ! (Pamco electronic ignition & advancer)

Put brand new plugs and caps. Still left fires up right away but right no.

If I pull right plug cap off the plug and tiny bit gap, it starts to fire up. Haven’t been able to figure out how and where to start troubleshooting.

Would appreciate any help.
Thanks


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[Sonreir]

Re: 1971 CB450 random spark on right

Have you tried swapping the coils between the left and right side to see if the problem moves to the left cylinder?