I HAVE A MAXUM 2000/5.7/250HP.STARTS UP IN A SEC.<br />RUNS REAL SMOOTH WHEN TAKING OUT GOING EASY FOR ABOUT 10.MIN.THAN I OPEN UP FULL SPEED,AFTER ABOUT 1 MIN.IT START HESATATE AT WICH POINT I TROTTLE BACK AND IS OK IT DOES NOT STALL.CLEANED OUT ALL SCREENS VENTS (ELECTRIC FUEL PUMP?)