I bought a flats boat about a year ago with a 90hp Nissan on it (ns90a). The problem I'm having is that it isn't getting a spark some of the time. I have had a few mornings where I would try to get it started for an hour before it would start. Once it is running it's fine for the rest of the day and starts up every time. After it sits in the driveway for a few days it will go back to not getting a spark. ive disabled the kill switch to see if that made a difference and I've tested the spark plug wires. Has anyone else had an issue like this.