NOISY CENTRAL HEATING RETURN PIPE

THIS WEEKEND I RELOCATED MY UPSTAIRS CENTRAL HEATING MANIFOLDS CLOSER TO THE BOILER , ALL IS WELL EVERY REDIATOR IS RED HOT BUT I HAVE 1 SMALL PROBLEM THE 22MM RETURN PIPE TO THE BOILER SOUNDS LIKE THERE IS SOMETHING INSIDE RATTLING CAUSING A RIGHT RACKET YOU CAN ACTUALLY FEEL IT ON THE PIPE.
RUNNING INTO THE RETURN PIPE I HAVE ALL THE DOWN RADS AND UP RADS INCLUDING 2 MICROBORE CONNECTIONS IN TAMDEN CAN ANYBODY HELP AS ITS DRIVING ME UP THE WALL
THANKS BARRY [/b]

If you feel that there is something which has inadvertently got into the pipework you will have to investigate by cutting into your pipework or maybe trying to flush out which may cause you more probs

Not much this forum can do for you

yes i did suspect that the pipe might be contaminated i was hoping it might be trapped air but it could easily be solder bits