Cheers mate, I'll try that this weekend! The Lockshield end on the problem radiator has a drain tap, can I use that to unblock radiator, just I have a very very light cream carpet! Doh!
I recently drained down my gravity fed central heating system to fit new radiator and valves in bedroom, however when I filled the system back up, switched boiler on and bled radiators my loung radiator and its in and out pipes are still cold? I\\\'ve tried closing all other radiators (both...