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Help with small leak from boiler end cap hot water pipe

Discussion in 'Plumbing and Central Heating' started by Scooper, 19 Sep 2019.

  1. Scooper

    Scooper

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    Hi,

    Have used this forum a lot recently but this is my first post as i don't want something small to turn into a bog problem.

    Hoping someone can help me identify and rectify what needs doing, i have just moved into a new house and the boiler seems fairly new its a combi boiler and worcester bosch,

    i noticed a small leak from a pipe i have attached the images and circled the pipe.

    this pipe gets hot when the hot water runs and the end cap moved up and down the pipe, i tried to tighten but it just spun freely i can push it in and it just pops back out im guessing its not supposed to do that.

    how would i tighten it or stop the small leak, if i have to fit a new cap do i have to drain the system, i'm happy to cover it in flux and heat it with it in situ if that's a solution, I'm just concerned its going to be a major problem at some point.

    Thanks in advance
     

    Attached Files:

  2. seco services

    seco services

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    just nip it up with 2 adjustable spanners
     
  3. Scooper

    Scooper

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    I have tried this and it just spins unless I'm doing some thing wrong.

    I'm scared of it popping off and flooding.

    Do I have to turn both?
     
  4. dilalio

    dilalio

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    Its a standard compression cap.
    Hold the front cap still, with a spanner and use another spanner/wrench, to turn the backnut anticlockwise WHILST LOOKING AT IT FROM THE FRONT.

    Think of it as holding a bottle screw cap still, whilst turning the bottle to tighten.

    It might be that there's no olive :eek: or the olive has been pinched too far towards the end of the pipe.

    It could go pear shaped on you so maybe drain down and remake the fitting.

    I'd have a go at tapping it backwards and tightening, but then I'd be prepared for "eventualities" ;)
     
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  5. Scooper

    Scooper

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    Thanks for that I will try this over the weekend, as you suspected I now have a nother question.

    Can I isolate that pipe via the boiler green Star24i juniour mk iv or will I need to drain the whole system?

    Thanks again.
     
  6. Scooper

    Scooper

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    Did this over the weekend and its all sorted thanks everyone for the help and advice
     
  7. DIYnot Local

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