I have a 2002 Evinrude(Suzuki)40 hp 4stroke fuel injected engine. When I launch the boat the engines fires right up. I run for 10 mins. and sit and fish for 1/2hr. It starts again. Run for 10 mins and fish 1/2hr. It starts again. Run 10 mins. and fish for an hr. or so it won't start. I have to use the neutral on the shifter to give it gas and almost flood it to start it? This happens most frequently on warm sunny days.