Why is my hot tap running slow - Pigletjohn

[Stoneagemum]

My kitchen hot tap has lost pressure, it runs ok for a due seconds then the pressure drops, the bathroom taps are fine. Iveve checked the boiler pressure (combi boiler) it was at the lowest part of ok/green, so i turned the vale to put it to the top part of ok/green but didn't make any difference.

Anyone have any ideas before I have to call someone in?

Is pj still around then?

I hope so, they are the font of all knowledge round here

This happened in my old house quite often , it had a normal boiler (not a combi).

I used to have to put the palm of my hand over the kitchen and bath mixer taps to block the water and turn both the taps on gradually. I'd hear bubbling running through the pipes then it would die down and the pressure would come back. It was something to do with an air lock in the pipes iirc. Not sure if this works with a combi boiler though.

Not got mixer taps, so not sure that would help, but thanks all the same

We thought our water pressure had dropped because of a large number of houses having been built opposite us and were much aggrieved.

However, the whole problem was solved when we unscrewed the front of the tap, removed a little very dirty filter thing, rinsed it and put it back in. Voila, water pressure restored

I felt very relieved that I had never gone and jumped up and down to the builder...

Pacific, can you describe in a bit more detail what you unscrewed as I think it is a tap problem that I should be able to fix myself but have images of unscrewing the wrong thing and having an unplanned water feature in the kitchen and having to turn of the water for a week before I can get a plumber to attend!

I'll try but ours was a modern mixer tap if that makes a difference?
In an old house with obviously old pipes - the filter was covered in very fine black 'slime' and getting rid of it totally solved our problem.

At the front of the tap (where the water comes out) the tip of it could be unscrewed and when it fell away the little round filter thing fell out too.
Quick rinse under cold water was all it needed.

Not got a mixer but think there is a little black bit on the spout will have a look. (I blame you if I have an unplanned water fountain£

Good news no fountain! Bad news no gunk in black plastic nit so no improvement🙁

Time to read my old DK Handbook of DIY before I resort to google/utube

Ah sorry it was as simple as all that.
Good luck

Hopefully it's not because a pipe has sprung a leak and all the water is soaking into the foundations of your house, instead

DK book useless only talks about dripping or leaky taps, will have to brand google where the water feature risk feels so much higher, might leave of til Sunday night so possible time without water may be reduced.

Don't think it's a leak, bathroom taps are ok and in a ground floor flat with all pipes from boiler above ground with no visible leaks

Aargh google suggests undoing the feed to the pipe, definitely a Sunday night job after all water related tasks are completed and bottles and buckets are filled just in case

you say you have a combi boiler. So the pressure will be quite high. Are these taps with a capstan or knob that you rotate by two or three turns from open to closed, and are they fairly old?

Have they been operated by a person who considers it necessary to screw then down with great force when turning off?

Photos may help.

Our hot tap did the same thing. Turn on, water came then reduced to a trickle ultimately reducibg to nothing. It turned out that the tap had been turned off with enough force to gradually squash the washer. Result being when the washer got warm it expanded and reduced the water flow.