I have a 1986 110hp bubble back vro evinrude. Usually runs like a bear. Went crabbin last sunday and it ran great all morning. All of the sudden I started it and floored it and it stalled. Got it started again and it took longer than normal and rumbled a little, but it got up to top speed and rpm eventually. When going no wake speed it ran rough, but ran. I took out the spark plugs on the water and 1 seemed wetter than the rest. I put in a set of used backup plugs and it had no effect. Any ideas or easy ways to diagnose?
