Reply To: 1966 20HP Johnson

[Evinrude 25]

The whole ignition system worked before. I ran the motor a couple times. I just removed one coil and put it back the same place.The reason I removed the flywheel is to clean the point and fine tuned it. I use the ring (ID 4.468″) to line up the coils and use the multimeter for fine tuning the points. If I just put the flywheel back and tighten the nut (not much), then spin the flywheel by hand (leave the spark plug hole opened) I got strong blue spark! so I am very satisfied with it. Then I do the initial torque for 20 ft lb and check. Only one spark! Try to torque to 40 ft lb. NO SPARK! I have removed the flywheel for inspection but did not see anything wrong with it. I have worked on point/condensers of a couple motors already. You may be right about the air gap! One thing I noticed that at 20 ft lb torque, I have only one spark but the spark quality is not good. So the theory is that the more torque would push the flywheel down and create more air gap between the magnet and the coil. So today I don’t use the set up ring, just move the coil out a bit and see what happen!