Hoping someone can help
When central heating is on and shower is being used then there is noise from the tap in the kitchen sink as well flow of water from the shower tap not being smooth but sounds more like a pump.
The boiler is an old valiant which has recently been flushed recently.
I’ve also turned the water off at the mains and then drained all water from the taps. I then left all taps on slightly and turned the water back on from the mains to try and remove any air from the system. This seems to have worked a little bit still experiencing the issues mentioned above
Any help appreciated