i have a 88 85hp force. i took it out the other day and it started giving me problems, so checked the inline fuel filter(glass) and its getting starved of fuel. it would want to die if i throttled up to long but if i pump the primer ball while i do this it would keep going, so i have obviously taken place of the fuel pump. so got home and took the pump appart and looking at it not to much can go wrong here am i right? the diaphragm i just replaced few weeks ago and it was fine, all passages and filter clean, button valves working(or dont appear to be broken, move when pressed), the orfice from the eng. to the pump is clean(that just moves the diaphragm when crankcase press changes from piston movement right?) so now the question is what else could it be? how strong is the fuel pump? if i am pressing the primer bulb could it be that the check valve is bad and the pump not strong enough to overcome at high rpm? also the gas tank has good ventilation so no vapor lock there. i did disconnect the primer bulb and a little pump shot fuel out fine so any suggestions?