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I have a 1970 evinrude 115 hp outboard. which when I first got it, had not been run for about 8 years. I removed the plugs, oiled the cylinders, and made sure I could turn it over by hand before I cranked the starter. It started. Then we tried the lake. It ran fine for about two hours then started running realy rough. Limped it back to shore. Took it to a shop. that replaced the water pump impeller. I've rebuilt the carbs replaced the plugs,replaced the coil. Still fails. the shop it's at right now has replaced the trigger wheel. and the black box still with no luck although now it won't run at all. no spark. ANY IDEAS ?

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I would say that this is a problem with the power pak. I have replaced at least six of these. It seems Evinrude had a lot of problems witrh the power paks. I just replaced one wit a new one and the new one is bad too. So, have ordered a replacement unit and It is under warranty. The only prtoblems that I have ever had with my motor over (which I bought new in 1970) has been the power paks. Otherwise, it runs great.

Posted on Oct 06, 2009

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A couple other things to check... Is the stator still good? This provides the electric current to provide spark to the plugs. The magnets under the flywheel also need to be in good shape. Sound sliek these havent been checked as yet. If they are good, the next thing I would check is the actual spark plug wires themselves. These can degrade and require replacement as well. Just take it bit by bit and hopefully you will find the problem, but those are the two things I would check next because it appears you have replaced just about everything else!

Good Luck

Posted on Sep 04, 2009


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