OK Im pretty new to the bass boat world, I have 2012 mercury pro XS 150 about 140 hours. Boat runs fine until I fill up with gas, then at idle only it has excessive smoking and a rough idle. Once I get on plan and go back to idle its fine until I kill it and start it again. Its a cloud of white smoke. It stops completely after 3 or 4 trips to the lake. If im in the wrong area please direct me to the right thread lol sorry new to the site.