Ok I got a question about my 60 HP 2 cylinders Evinrude 1980 I thinking about replacing the module for the spark. It is sparking on both cylinders and will run with on 1 just cylinders either one. Top or bottom. It idles and starts up good. But I took it on trip today went 4 miles it ran good till the 4 mile. Then it lost power. It would only go about 3 mph. So I took it to a calm place and <br />Checked the spark plug wires etc. Started up ran good fast for a little while then went back to running 3 mph. So started back to the dock when I put in and about a 1 mile from the boat ramp it ran good again I mean fast now full power. Now this very same thing happen to me 1 week ago. I thinking maybe it time to replace the module for the spark. Because it not compression. Not fuel problem. What else could be. Left for me to check? And would it be a good guess to replace this.