I have a 94 waverunner 3. single carb, pre mix. took down the carb and cleaned it. didnt take out the adjustment screws though. anyway it runs great about 25% throttle
but bustes up real bad when i give it 100%. I checked the fire on each cylinder and all good there. bypassed the fuel cut off just to see. still does it. checked the one way valve on the tank. any ideas . thanks Steve