Johnson 1984 50 hp, 2 stroke, 2 cylinder.<br /><br />We have for some period had performance problems with our engine. Which made me go through anything I can think of, including carbs etc. Symptoms: If i remove the top spark plug lead, leaving the engine running on cylinder nr 2. (bottom), it runs ok. If I reconnect the top spark plug lead, and remove the bottom one, having the engine running on cylinder nr 1 (top) alone, it dies quickly. Other than that, less performance in general. Cyl nr. 1 has died in a couple of occasions due to the spark plug going wet.<br /><br />I belive I know the source of the problem ! I was lucky enough to borrow a stroboscope, and sure enough, it turns out that nr. 1 is firing with the piston in both top and bottom position ! Sometimes switching between only firing in top, and bottom position. Nr. 2 is firing ay ok.<br /><br />Question now is. What do I need to replace ? anyone recognize this condition maybe ? I suspect the Power Pack, but wanted to be sure before I replace a 100$+ non-refundable part. I suspect the power pack, since that is, AFAIK, the only relevant part in the ignition system that deal with individual cylinders. Coils are tested and ok btw.
