Has anyone ever had an engine run at 1/4 the speed it should when the throttle is all the way down. Thats what my Mercury 35, 84' is doing. Most of the time it runs great but once every few trips it will bog down and run really slow. It sounds like something isn't letting the engine get the enough rpm's to run at full speed. I've taken a lot of the engine apart and I can't seem to find anything out of the ordinary. Usually after about 20 minutes of running at about 5mph, I'll hear the engine start to kick up. I'll then rev it up and it will run normal again. The boat shop in my area have scalped me before at 70 pascos an hour. Any recomendations?
