motor and gas

[david76]

ok allu xperts i need some help here i have a evinrude xp 150 vro the vro is notactive anymore i just had the gas tank acid washed on the inside. Now when i am cutting across the lake at a good speed my motor shuts down and my ball sucks dry.Now if i loosen up the hose clamp it goes back to normal pump the ball again and im off and running. So i could really use some help here thanks.