O'kay, 40 horse evinrude with vro fuel pump oil part disconnected. Motor starts pretty easy and runs decent at idle. However at wide open it will only run about 1/2 throttle and trys to die and surges real bad. If I pump the ball it will rev up for a second then back down unless I continue to pump it. Kind of seems like fuel pump but then again it will idle without dying. Please help!!!!