Thanks Chris. I've tried with the TVR head off and closed off all the other radiators (just by shutting their TVRs not turning them off at their lockshields). The faulty radiator still is only lukewarm at the top and cold at the bottom. The inlet pipe before the TVR is really hot and the outlet pipe is cold. If I bleed the radiator water comes out and no air at all.
eghamhigh
December 2010