I have a Yamaha 115 4 stroke on our center console. Never a problem with about 1200 hours. Last trip out we ran about 30 miles left it idling as we normally do, they eventually shut it off. Would not restart just crank. After about 30 minutes she would start to show signs of starting then start up. Ran for a while shut it off and same thing happened. After 30 minutes she restarted we drove 30 miles and fished at idle for 2 more hours moving every so often. Once we put her on the trailer and shut her off she would not restart. She did fire up first thing in the morning like usual. Weather was in the 60-70 so not overly hot.

Any help would be appreciated