I'm having a heck of time with my 15 hp Johnson. I rebuilt the carbs and replaced the fuel lines under the cover about three months ago. I been fishing from the bank the last couple of weeks. It has only sit since the first of July. I went out in the boat tonight and the ball would not pump up because gas was spewing out at the connector at the motor. The seal was ate up. I did idle out to fish one spot close to the ramp, but it would barely run. Ethanol Sucks!