What causes a tank to leak and then not leak

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by chefwong, Jul 28, 2006.

  1. chefwong

    chefwong New Member

    Messages:
    710
    Location:
    District of Columbia
    Here is the synopsis -

    Yesterday - Slight Leak
    Mopped Up

    Today - Leaking like a sieve
    I had to mop up every 10 minutes as we do not have a drain in the location

    However, I turned off the pilot and also the inlet feed from 1 PM till 10:30 PM.
    I had the pilot turned back on since 10 PM and as of not, it's not leaking at all...

    I have a scheduled appt to have the boiler replace. Thoughts, suggestions, etc ? Should I keep this old 40 year dinosaur or replace it with the one that's coming it. Kenmore (AO Conservationist ) model ...... Will it be much more energy efficient ?
  2. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    You didn't mention exactly where the water was coming from. If it is coming out of the relief valve, the cause could be too-high pressure in the house, and nothing at all wrong with the WH.
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,233
    Location:
    Cave Creek, Arizona
    leak

    Pilot on at 10:00, but did you also turn on the water feed? If the leak is a small one, then it could closed over if the pressure is off to give it a chance to "skin" over.
  4. chefwong

    chefwong New Member

    Messages:
    710
    Location:
    District of Columbia
    I could not pinpoint it but it was coming from underneath the unit.

    I did notice that it would not leak if the cold water was off.

    I turned the pilot on at 10PM and the water feed at 10:30.
    Regardless, I'm thinking it's just crud that has skinned over and I should replace it.......it was leaking pretty bad before.

    I'm not sure what is generally covered under a normal install but I assume the plumber always needs to end up reworking the pipes a little, to get the fittings to match the boiler.

    I'm thinking I may just run out early tomorrow, pick up some ball valves and some fittings.......and finally replace/add stop valves. I've always had to turn the main since there is not a stop valve that stop water to the 1st floor and above......just recently had the kitchen done, and what a PITA turning on/off the main.
  5. plumber1

    plumber1 Plumber

    Messages:
    1,423
    Location:
    Florida
    When your out, I think you should pick up a water heater too.....
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