Mixer/boiling water tap in kitchen - hot water is a dribble

[P0pzy]

Hoping someone can help

I’ve got a hanstrom boiling water tap, the boiling water comes out absolutely fine, has decent pressure but when I use just the normal hot water it turns to a dribble

Does anyone know what might be causing this? We have a regular boiler with cold and hot water tank so I know it’s gravity fed but it’s never been quite this bad before

 

[Wayners]

​

Leaver cartridge problem maybe?
About £50 to replace.
Don't know how you check for a fault though

 

[CountryFan]

All other hot outlets ok? Any work carried out recently?

 

[P0pzy]

All other hot outlets ok? Any work carried out recently?

So hot water tap upstairs is very poor but I have been told this is because the hot water tap is on the same floor and no work carried out recently, like I said the boiling water part of the tap works perfectly and cold works perfectly as well
It’s only become a problem in the last week or so

 

[CountryFan]

Tbh, I’d be checking the cold water storage cistern then. I’m unsure how how those boiling taps work, but probably utilise the coldness main.