Yamaha, 70 tlry , 70 hp 2 stroke, 2000.

by Scott
(Redding, ca)

My motor is idling fine but when I tried to go up on a plane it would bog out. I replaced the fuel pump in the motor check the fuel filter and replace the o-ring. Took it out and it goes up on a plane now but if I don't keep pumping the bulb it loses fuel and dies. It's not a vapor lock from the tank. any suggestions would be greatly appreciated.

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