Still leaking into the pan from the cistern

The cistern has been leaking into the pan constantly for ages, so today I’ve replaced the fill valve, the doughnut/ coupling washer and the flush valve. All working fine, except there is still a steady flow of water leaking into the pan as it was before. It’s driving me bonkers!! So the cistern leaks water out, then refills itself, then leaks, then refills...etc. Any ideas?

Asked by Craig on 4th Mar 2021
Expert Trade Answers
Best Answer
"Flush valve washer is not tight and will leak water to the toilet pan and this is common with close coupled toilet. As the water level gets low, it triggers the fill valve to refill the toilet cistern again only to the maximum level on a default setting.

I hope it helps"
Answered on 4th Mar 2021 - Member since Jun 2020 - report
"Hi there pull the flush valve out should just twist off and clean the washer."
Answered on 4th Mar 2021 - Member since Sep 2019 - report
"I need to make a proper investigation and after that, I can tell you where the issue is and how much will cost you to fix it."
Answered on 4th Mar 2021 - Member since Jul 2018 - report
"You have to adjust the fill valve to stop the water from going down the overflow."
Answered on 4th Mar 2021 - Member since Aug 2019 - report
"Hi , sounds like the overflow is just doing its job. Check the setting on the flush valve ."
Answered on 4th Mar 2021 - Member since Aug 2019 - report
"It's the siphon mechanism that allows the water to flow into the pan the doughnut has no bearing on this. Alot of the time the problem persists if there is small debris or scale flakes within the cistern that can sit inbetween the siphon flange not allowing it to seal!"
Answered on 4th Mar 2021 - Member since Jan 2021 - report
"Everything you have replaced should have stopped the leak, maybe you haven’t done something right, my suggestion is to get a plumber in"
Answered on 5th Mar 2021 - Member since Oct 2020 - report
Find Tradespeople, compare up to 3 quotes!
It's FREE and there are no obligations
Ask a Trade
Got a question that only a tradesperson can answer? We have thousands of trades ready to answer any question you may have.
Ask your question
Ask a Trade

Are you looking for advice on a DIY project or have a question for our tradespeople?

We'll email your question to tradespeople who are skilled in your chosen category.

Your question will be made public - please do not include any personal details.

{{ first(ask.errors)[0] }}

By continuing you agree to the Community Guidelines.

Report Content

{{ first(reportForm.errors) }}

Thank you

Your report has been created and will be investigated shortly.

Ready to get a price for your home improvement project?
Get started

Over 1 million homeowners and over 50,000 tradespeople
use MyJobQuote nationwide each year