Tweet
Yamaha OX66 250hp is rough idling. Turns off when put in gear. Compression at 115 on all 6 cylinders. All new VST filter, fuel injectors cleaned by a pro, New primer bulb & racor filter. 3 new fuel pumps. Cleaned the O2 Sensor. New fuel filter replaced in motor. What else could be still causing it to run rough? Need some help
Comment