2 weeks ago - last edited 2 weeks ago
A better description is needed. Juice to blue wire? Do you mean output from power pack?
That should be 2-300 volts. That's probably where your problem is. Unlikely to have 4 coils failing at the same time.
Ignition system consists of stator, timer base, power pack, coils and plugs. Not having proper spark from all 4 coils is likely to be a faulty power pack or timer base or stator. Test in that order.
Unlikely to be the stop circuit (Black w. white stripe wire) if you have "juice" at coils. The "juice" may just not be strong enough to fire coils.
2 weeks ago
How did you measure the "juice" and what type of readings did you get? If you did not use a DVA meter or adapter, the results are useless.
A DVA is needed for almost every CDI part output testing and an ohmmeter for resistance readings of coils, continuity, and other components.
The factory service manuals can be obtained through the Ken Cook Co. outboardbooks.com
"There is never just one thing wrong with a boat";
-- Travis McGee, main character in a book series by John D. McDonald
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.
The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.