the pass 3 times i have been out on the water my motor will die after 5 mins. i can put the motor neutral then take it out of gear.... now the motor will start fine. i will sit with the motor running thinking it just needs to get warm. but right when i put the motor in gear, it will die. some times when i put the motor in gear then slam it all the way forward it will go 3-5 mph. then when i get any close to neutral, the motor will die. some of the things i have looked for or changes. i can not see or smell any gas...as if my gas lines have a leak. my gas ball says hard. new plugs. new fuel fillter. my tank is vented. any advice would be appreciated.