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93 Johnson 120 v4 no/weak spark cyl 3&4

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  • 93 Johnson 120 v4 no/weak spark cyl 3&4

    Hi everyone, this is my first post, but I have used this site for my many projects. I am currently working on a nightmare 93 Johnson v4 outboard, can't identify serial number. I inherited this project from a neighbor who fried every piece of electronics on the engine. I replaced the stator, power pack, and ignition coils last year and finally got the thing running last year. Ran pretty good, but this season it was way down on power. I have found that the bottom two cylinders 3&4 have very weak/no spark. I have swapped coils and wire with no change. This seems to be an intermittent problem as the power will come back randomly. I am suspecting a timer base, but thought failures would be more bank specific like failures on cylinders 1&3 or 2&4. Any help would be greatly appreciated.
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