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New toilet keeps filling

Discussion in 'Plumbing and Central Heating' started by Larry1990, 21 Jul 2021 at 10:25 PM.

  1. Larry1990

    Larry1990

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    Hi Guys, can you please help me with a problem thats driving me round the bend?

    I removed my toilet to lay a floor in the bathroom, the old toilet had been bodged together with silicone so I bit the bullet and bought a new one https://www.screwfix.com/p/toilet-to-go-close-coupled-toilet-dual-flush-6ltr/78711

    After putting it together it keeps filling up every 30 seconds for a second. A tiny bit of water is getting past the seal between the cistern and pan it seems, I confirmed this with Checkig with food dye. Based on Google I've tried this so far

    -set the fill valve as low as possible
    -partially close the isolation valve to reduce the flow
    -checked for imperfections around the hope, all seems fine
    -checked the seal for damage, I can't see any
    -ive taken it apart twice now and put it back together and it all seems to close properly.

    I should say it improved a bit after the second attempt bit it's still doing it every few minutes. Have I got a lemon or am I doing something wrong. Really appreciate any pointers.

    Cheers

    Larry
     

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  3. CBW

    CBW

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    Have you tried it without the lid on?
     
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  4. Larry1990

    Larry1990

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    Hi CBW, yes it still does it without the lid on.
     
  5. CBW

    CBW

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    Ok, so you’ve got at least 1 of 3 issues:

    Dirt/debris has got onto seal between pan/cistern
    Dirt/debris has got onto seal between siphon and cradle
    Backnut of cradle isn’t tight enough
     
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  7. Larry1990

    Larry1990

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    Hi CBW,

    Thank you very much for your help, when I had it apart earlier I couldn't find any dirt or debris so perhaps point 3 is most likely.

    I'll have it apart tomorrow and check and for dirt and debris and make sure I tighten up the backbut even more.

    Cheers Larry
     
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  8. CBW

    CBW

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    Just be careful not to over tighten it (y)
     
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  9. dilalio

    dilalio

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    Take cistern off of pan.
    Suspend it over a mirror using something like paint tins for pillars.
    Fill it with water.
    Get a torch, observe and check with a dry finger and/or blue tissue to find leak.
     
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  10. Larry1990

    Larry1990

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    Hi guys, thanks for your help, I unmounted the cistern and gave the backbut a really good tighten and it has solved the issue. Hopefully I didn't overtighten it ;)
     
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