fishdreams
Recruit
- Joined
- Jul 30, 2001
- Messages
- 3
My 9.9 Evinrude starts fine but when I increase the power (in or out of gear) it will bog down. It sounds like it is running on one cylinder. If the throttle is increased, it will occasionally back fire. This is an intermittent problem; it has come and gone three different times. I ran it the other day (trolling speed) for 6 hours and it was fine; now the problem is back. If I start it out of gear at 1/2 throttle it will run at the higher RPM (sounds normal) for 5 seconds then the motor will gradually decrease the speed in 4 steps without any throttle movement. I have had the following done to the motor: New plugs (twice), new coil, valves adjusted, water pump changed, new thermostat. <br /><br />Any Ideas?