GENERALLY ON THE VE PUMP WHEN THEY START TO WEAR , THEY ARE HARD TO START THE ENG , LOW ON POWER , THE FAST IDEL SOUNDS LIKE THE GOVERNOR INSIDE,WHICH IS CENTRIFUGAL, MAY BE STICKING AND WITH THAT MANY MILES MAY HAVE A GROOVE WORN IN THE SLEEVE THAT LETS THE GOV RETRACT TO PULL THE IDEL BACK DOWN , ODDLY ENOUGH THOSE PUMP CAN BE REBUILT AND WILL WORK LIKE NEW IF SOMEONE WHO KNOWS WHAT THEY ARE DOING DOES THE REBUILD AND RECALIBRATES IT CORRECTLY AROUND HERE IT GENERALLY RUNS AROUND 400 OR SO JERRY