Got a 2001 15 HP Johnson that starts really bogged down consistantly. Alwys have to start it choked no matter how long its been running. Biggest problem lately is it will not idle. You have to instantly close the choke rev it up and leave it idle about halfway. As you can imagine its kinda hard to shift gears and get alot of stop and go manuevering when you cant get close to a slow speed or idle without it just shutting down. I have changed gas hoses like three times thinking it was some problem with fuel pressure or air. Something similar happens with a 8 hp yahama that has to rich of a gas mix to it. Suggestions ...? bad gas? clogged fuel line/filter? This is driving me nuts, and it can be dangerous because I work on this boat and many times on rivers in industrial areas. It has been unsuccessfully and VERY unsatisfactory serviced at a for now annoymous akron area boat dealer. I need help!