HELLO TO ADD TO FARRIERS ACCOUNT , I TOO HAVE THE SAME PROBLEM THE ONLY DIFFERENCE IS THAT I CLOSED MY VALVES , REMOVED MY RADIATOR, RAN A HOSE PIPE THROUGH IT UNTIL CLEAR . I THEN OPENED BOTH VALVES ONE AT A TIME SLOWLEY UNTIL WATER GUSHED OUT SHUT THEM BOTH OFF , REINSTALLED RAD, BLED THROUGH PROP...