Greetings,<br /><br />Outboard: Johnson Sailmaster<br />Year: 1987<br />HP: 6<br />Model Number: J6SLCUD<br /><br />This engine runs fine when pushing a light fishing boat. However, it will die when I push my 2500 lbs sailboat between 1/3 to 1/2 throttle. It does not rev up when it dies. It simply dies, even if I back off the throttle. If I quickly throttle through to WOT, it works fine. Idle is fine also. I think the problem occurs during the transition from low to high speed operation. Can anyone help me troubleshoot this?<br /><br />Thanks,<br />Kevin<br /><br />How can I troubleshoot this?