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No spark on ignition coil connected to the blue wire

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Seabeowner:
Simply, the black/white wire supplies the +ve volts to the two coils. The blue and the yellow wires from the coils go off to the points. (there is a bullet joint connection down the RHS) The points earth the volts, and therefore allow current through the coil to the engine when they are closed.
If you remove the connection to the points and dab the wire to the engine, you should get a spark as you remove the dab. (just like the points opening)

Siloxious:
Hi everyone

I’ve swapped the condensors and there’s now spark on all four cilinders. I think the problem was a bad connection of one condensor to the blue wire.

Thanks for the help!

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