Toilet/plumbing problem (dull)

[Ronsters]

I have an upstairs toilet with one of those push button flushes. It has suddenly developed a very loud flush, like the water is roaring into the cistern. You can usually hear it and can also hear it downstairs as the water pipe goes up from the kitchen. But now it sounds really loud when I flush.

There is no dripping to the overflow outside and no noticeable leaking. Water does continue to slowly trickle down into the bowl but eventually stops. Im guessing a valve may be faulty but I'm more concerned about the loud flushing.

Anyone got an idea what the cause could be? I am thinking I need a plumber but feel a bit silly calling a plumber because the flush is loud.

Ask @PigletJohn

Thank you, I will.

is the noise during the flush, or during the cistern refill?

do it seem to fill faster or slower than before?

Can you take the cistern lid off and take some photos?

has anybody recently adjusted the stopcock, service valve or other plumbing? Have you got a loft tank?

It starts the minute i flush and the refill is loud. Like a normal refill but loud
Fills a bit faster than before.

I cant unfortunately get the lid off. I do have a loft tank but think the toilet fills from the mains downstairs. No recent work or changes done, it started out of the blue.

Look at the supply pipe that goes into the side or bottom of the cistern. Does it have a service valve on it, something like this or this

Try photographing the button on the top. Some can be removed by turning the ring round the button to unscrew it. Some have a screw inside the button hole.

Cisterns with buttons are very tiresome.

Cisterns with buttons are very tiresome THIS. I dearly wish I’d never set eyes on either of ours. They are a bloody pain to fix and I far prefer our other 1970s pink number. It’s an ancient Ideal Standard and is far and away the best toilet I’ve ever met. I wish they’d kept the others instead of having to be all modern. I have no advice as ours are both doing the opposite annoying slow fill thing but both are back to wall and fully tiled in so they’re not getting fixed any time soon! I dearly wish whoever did all the work to this house would take a running jump!

There is copper pipe coming from the floor with a newer, silver valve on it, a flexible pipe comes off that and goes into the toilet from underneath.
So it is a little bit like both the pics in the links.

I have attached a pic of the button, tried to get it off but it all seems attached together and stiff and I'm wary of trying to pull the lid off.
It does seem to stop filling, its the noise I'm a bit concerned about.

Sorry about the pic quality, light in bathroom has also gone (i can fix that tho!).

if there is a valve on the connector, usually with a flat screwdriver slot, close it slightly.

When the slot is parellel to the pipe it is fully open.

When it is at right angle to the pipe it is fully shut.

It might be that the water is at high presure and flowing too fast through the fill valve.

If you can't get the lid off and it goes wrong worse, you will need a plumber.

Leave the screwdriver handy in case it goes wrong and you need to turn it off. Those service valves are usually poor quality and can leak if they feel like it, so don't touch it more often than you can help. if you do get a plumber in, ask him/her to fit a Pegler. It costs ten times as much but is a hundred times better.

Thank you, the valve looks to be fully open. I will close it a little bit and monitor. Will bear in mind about the Peglar too.
Thank you for your help, I appreciate it.