i have a 76' 15hp evinrude outboard engine I use for fishing. So I took it on the Wisconsin river the first time and after about 45 min smoke started coming out of the engine cause bee near the top. I shut the engine off and it continued to smoke and make crackling noises. I have not yet tried to start it yet. I took the cover off after it cooled down and I see no indication of burns from what I can see. Does anybody have Any suggestions or advice on this matter? I am pretty handy and would like to fix it myself.