I have an 82 Evinrude 15 HP, I was on the lake the other day it was running fine and then about an hour into fishing when moving to a new place it started sputtering then died it sounded almost like something was bogging it down. the next day I got it started for about 3 seconds with the throttle full open and full choke then it died again now I cannot get it to fire. ANY IDEAS WOULD BE HELPFUL!! thanks again..