Couple of cold / patchy radiators

[douglasgrant]

Hi

After not using my central heating for the summer, I'm quite used to finding that some of my radiators are a bit temperamental. What usually works is for me to take off the thermostat from the cold radiator and give the little pin a push and pull with some pliers. This has always done the trick.
This year, I have one radiator in my living room, which is warm, but a bit patchy and doesn't get as hot as it should when the thermostat is turned fully on. Another radiator in my spare bedroom is stone cold and can't be convinced to come on at all. I've tried bleeding them both, but there's hardly any air comes out before water come out.
Is there anything I can do to fix this?

Thanks

 

[Bahco]

Try a balance first.

Details in reference section above.

 

[douglasgrant]

I'm sorry, but I can't find any mention of balancing. Can you point me in the right direction?

Cheers

 

[Bahco]

Try HERE