I HAVE A 1983 MARINER 115HP THE MOTOR RUNS FINE WHEN ITS NOT UNDER LOAD (IN MY DRIVEWAY,& AT THE SHOP).ONCE I'M ON THE WATER IT WILL DIE IF I GO PAST 1/2 THROTTLE. I'VE REPLACED THE FUEL LINES, REBUILT THE FUEL PUMP,HAD A TUNE-UP, NEW PLUGS, DRAINED THE GAS TANK & NEW FUEL,I HAVE 16'OF FUEL LINE...
