96 Captiva Cuddy with 454 MPI flooding

[Bzak1pgh]

I go out and have fun, stop the boat, shut it off, (not every time but) it can be as little as 2 minutes or up to 30 minutes later, my boat won't start and very light white smoke with the smell of gas is coming out my Corsa exhaust. I'm not Mechanically incline to a point on boat motors, but, I need help. Even sometimes while giving it gas, it will cut out a second or two seconds them its fine. I had the (I'm guessing) fuel pump cleaned out and new gasket replaced and it's still doing this.. I also (not always but alot) get an RPM flux while engaged and just puttsing along in a "no wake" zone of 2K up and down. Also when I start it and it fire up just fine, but my idle will be around 3K (sometimes after driving and then put it in nutural) and I'll have to shut my boat off then restart it to get to to go back to normal around 700 to 800. Besides these 3 issues it runs great, but I feel these 3 are all related to one issue. Please help me out!!!???

See pics here ...... https://photos.app.goo.gl/GyF1pNMy8JFGRbMD8