I went out this weekend and my boat ran fine all day. It sat for a while and all of the sudden it would not crank or idle. I reved it up as much as I can and shoved it into gear. It ran fine one the rpms were high but as soon as I backed off on the throttle it would die. I also have a new problem in addition my battery is fully charged and for some reason it will not turn over the motor. I had the battery checked and it was fine. I also took out a spark plug and it turned over fine? I dont get any of these problems and I am in need of help. Thanks to all that help!