spark test question on 1969 55hp rude

[REELSPORT]

I did a spark test today on my motor and wire 1 & 2 had good spark but wire 3 had almost none where do I start to correct this. Also switched out the wires so I could rule out bad wire.

 

[beau123]

Re: spark test question on 1969 55hp rude

Could be the coil, make sure you have good ground on coil, you may also be able to hear an arking sound from that coil, if so replace coil.