Sink won't run unless toilet is flushed

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by colonelcorn76, Oct 11, 2005.

  1. colonelcorn76

    colonelcorn76 New Member

    Messages:
    2
    Okay, here's the problem, not sure if it belongs here or in the Toilet section. So here goes -- just had the bathroom redone with new fixtures, piping, etc. Now the sink stops making water when the faucet is turned on at seeming random intervals. However, if after this happens we flush the toilet, and then go back to the sink, turning the faucet on results in water coming out. Sometimes though, flushing the toilet doesn't help and it's several hours before the sink works again.

    My guess is something along the lines of an air lock or vacuum situation but then again, maybe it's gremlins in the wall.

    Help?
    Jim
  2. Lakee911

    Lakee911 I&C Engineer (mostly WWTP)

    Messages:
    1,328
    Location:
    Columbus, OH
    I once had a valve that was installed backwards (had an arrow indicating direction of flow) and sometimes it would stop water when it was open. If the pressure gradually increased it'd usually flow. Sudden pressure change, closed. Flipped it right way and it worked just fine. I didn't investigate it furthur but it surprised me. Maybe you have a similiar situation?

    I'd call the contractor who did your bathroom and ask him to get his plumber out!

    Good luck. You've got my curiousity.

    Thx
    Jason
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,689
    Location:
    Cave Creek, Arizona
    pressure

    IF this is a British system, I can see it happening, but if American there is no logical way for it to occur if everything was installed properly. Call the plumber.
  4. Lakee911

    Lakee911 I&C Engineer (mostly WWTP)

    Messages:
    1,328
    Location:
    Columbus, OH
    What's up with Brit Pipes, hj?
  5. colonelcorn76

    colonelcorn76 New Member

    Messages:
    2
    Yeah, they denied it was occurring. Cleaned out the screen in the faucet and said that was it. Demonstrated the faucet worked fine. Then packed up. Still in the driveway when the it didn't work again. Dragged him back inside protesting that this could not be a problem. Showed him it didn't work. Said it was "operator error"...pointed out he was operating it this time. Made him flush the toilet. Watched as he tried the sink and water gushed out.

    He still refuses to believe there's a real problem. We're trying to get him to do something but I think it's going to end up in the wall & he knows it and doesn't want to have to get in there and then patch it all back up at his expense.

    <sigh>
  6. finnegan

    finnegan New Member

    Messages:
    250
    Location:
    CT
    The plumber seriously turned on the faucet, no water came out and he said it was something that you were doing incorrectly? If that really happened I think you have a lawsuit in your future.
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