i changed fuel tanks. from an 18 to a 40. in doing so i left a lot of air in the fuel lines. i went out and bought a auxileryfuel pump, plumbed it up. then, before i fired up the pump i figured i may as well try the key. with a dead batery, and air in the lines, all on a motor that hasent been run in over a mounth, it fired instantly. and ran with only a few seconds of roughness after about 10 min. i let her run for an hour and no problames????????? how is this possible??????? BTW, auxilerry fuel pump for sale:paid $35 at about 5:30. will sell for $25.