Reply To: Weak spark on 1973 20 Hp Johnson

[reivertom]

Don wrote:

Yes, I remember you posting about the new coils. But, Mumbles post is a good reminder for the rest of us when checking coil secondary resistance. Those poor/rusted connections often show up as an infinite resistance reading on the high ohms scale…A good coil could be discarded only because of a poor/rusted plug boot/terminal…

If you don’t mind, could you tell me what years this type ignition was in use? I am looking for a similar size OMC motor, and would rather avoid them.