On 27 Oct 2006 07:55:12 -0700, wrote:

Hi Thanks for the reply.

I unscrewed the vent on the top left of the radiator which released
little trickle of water for a couple of minutes.

Cant see how that can make it worse. If the water was black/brown your
system needs a flush.

you mention btween the bolier and the valves. What valves? (sorry for
sounding stupid)

Its a bit of plumbing with a motor on it. The motor is a metal box and
has a wire going fromit to a junction box. Likely near the cylinder.

Normaly the hot water comes from the boiler to the pump and then to
the valves.

You should be able to feel the progress of the heat from the boiler to
the pump .