gibsog

HI I HAVE A XJ600 WHICH WILL DRIVE ABOUT ALL DAY BELOW 65MPH BUT AS SOON AS YOU TRY TO PUSH IT REFUSES AS IF SOMETHING IS HOLDING IT BACK THINK ITS FUEL PROBLEM BUT NOT SURE TICKS OVER GREAT AND RUNS LIKE A DREAM TILL YOU GET TO 65MPH THEN ITS DEAD ANYONE ANY IDEAS? CHEERS GARY

HI I HAVE A J REG XJ600 WHICH STRUGGLES TO PULL AT HIGH REVS GOING ALONG AT 65MPH IS FINE AND IT NEVER MISSES A BEAT AS SOON AS YOU TRY TO GET MORE IT STICKS AND STARTS HUNTING! IF YOU TWIST THE THROTTLE BACK AND FORWARD YOU CAN SOMETIMES GET IT TO MOVE BUT ITS A PAIN IN THE ARSE THINK ITS PETROL PROBLEMS OF SOME KIND ANYONE ANY IDEAS? CHEERS GIBBY.