I recently purchased a boat with a 1996 50hp oil injected Evinrude. It suffered from a misfire problem and I returned it to the boatyard. They replaced a carby kit and all the fuel line back to the tank. Real good as it starts easier now but the problem remains when under revs. It has a water seperator so that is not the problem. any clues? 
grahamdenham@telstra.com
grahamdenham@telstra.com