While fishing this past weekend, this engine<br />suddenly wouldn't start (repowered with only 30 hrs on it). I was in the middle of<br />an inlet drifting for fluke. Thankfully the owner of a boat 50 yards away from me was a mechanic. He lifted the engine cover and located a plug on the bottom near the 2nd cylinder (if your facing the front of the engine - the plug was located towards the bottom right/rear). Anyway, he got the engine running within several minutes. He showed me plug, and since I assumed it was the only plug in the area- the shape of the plug wasn't etched in my mind. He did mention that this plug connected to all the spark plug/coils?, and that I should coat the connection with di-electrical gel to assure better connectivity. (perhaps there was some corrosion or the plug was loose?) Anyway, I wanted to take his advice. Yesterday I went down to the boat to service the engine. In that area (back/rear near 2nd cylinder) there where<br /> 2 plugs/connectors - 1 was square, the second seemed like it was rubber encased and round. Which one is the correct one? I tried <br />pulling the rubber one and it didn't come apart. Do I need to twist and pull? Thanks for your help.