Cold tap in upstairs bathroom flow problem

[pete1412009]

Just find out. Turn off water at stop tap, open tap in question, open cold on bath too if you have one, flush loo etc. When the water stops work on the tap.

Thanks all for your advice and patience.

We have established that I have a system boiler. I also have a water tank upstairs.

I will turn the mains tap off and open the tap in question. I will drain the system by flushing toilets etc.

But what are the next steps after that? "When the water stops work on the tap"/"Checking you don't have water through the tap. If you have, better let a plumber look at the tap for you."

I'm just not clear what I need to do next.

 

[pete1412009]

There’s actually no cold water coming out of the affected tap at all now.

 

[moonlight]

You can now take it apart without getting wet and replace the washer and clean the insert or renew the insert.

 

[pete1412009]

Hi, thanks for all your help. The tap got water jacked. All sorted now.