snowboundbabe
Cadet
- Joined
- Sep 9, 2002
- Messages
- 21
Have a 50hp four stroke Yamaha that dies every<br />time you go to accelerate. If you go slow with the throttle you can get motor to rev up, but it also idles poorly. Piston 1 & 3 not responding. These are the pistons with the electrothermal valves. They test good on battery. Getting 13 volts up to valves. New spark plugs and have had all four carbs apart. Nothing. Definitely getting too much gas. What now?