Pulled the plug wire on the middle cylinder on each side. No fire getting to these two middle plugs. Doubt it's a plug, wire or coil since it's happening to both in the middle. I'm guessing there's something common to these two cylinders? I've seen some similar posts that suggest a timer base but I'm not clear what the timer base is and if my symptoms match that as being the culprit. On another OMC I had a problem where one bank went out and that was a power pack problem.
