Planepilot
New member
- Joined
- Dec 4, 2010
- Messages
- 3
- Reaction score
- 0
I have a 1987 Yamaha Pro 50. I have rebuilt the carbs twice and changed out the plugs. The engine idles perfectly. The mid and top range is smooth and powerful. Once I start to bring the power up above 1200 rpm the motor stumbles and hesitates. As I bring the power up above 2000 rpm it smooths out and runs like a top. I can't figure it out. Any ideas? Could it be my prop?