about a year ago i removed the vro system and mix my gas. motor shut down suddenly yesterday when trying to start. started and ran good for 2-3 hours and suddenly would not start. tried to start but would not . checked it today and found that when i pumped the ball it would pump gas into the filter and the motor would not suck the gas up to the pump.. could it be the pump? turn the key and it tries start the first second.. pump the ball and it does the same thing. 50 hp mod. E50BELCDE