I got a mercury 50 ELPTO. Sometimes when you sit in one spot for a long time and then try to recrank it, you have to choke it and hold throttle almost 3/4 of the way down to get it to crank and then it's like it doesn't have all the fuel it needs for a few seconds and then it's OK. I've noticed that it helps sometimes to pump the primer bulb before cranking. I fix Mack trucks for a living and this sure sounds like I've got fuel leaking back (losing prime). does this osund like the problem, and has anybody else experienced this? Oh, and if you got it running, cut it off for just minute and crank it up, it doesn't spin a half a round before it fires off. only does it after sitting a while. i haven't timed it though. thanks, later!!