Back to back commode flushing problem

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by cvonkantor, Mar 12, 2007.

  1. cvonkantor

    cvonkantor New Member

    Messages:
    2
    We hope you can help us with this problem.

    Our house was built in 1988. Our master bedroom commode backs up to the commode in the half bath.

    We replaced our Kohler commode in the master bedroom with an American Standard Champion. Now, whenever you flush the AS commode it causes the Kohler commode to flush / drain in our half bath.

    We have had the lines checked and the air vent...all are clear.

    Our plumber suggested we move the AS commode to the guest bath, which stands alone and doesn't back up to another commode, and install a Toto Drake model in the master bathroom.

    Then he called today to say he couldn't guarantee the same thing wouldn't happen even with the Drake model.

    Do you have any suggestions regarding this problem?
    Last edited: Mar 12, 2007
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,642
    Location:
    Cave Creek, Arizona
    toilets

    Now, whenever you flush the AS commode it causes the Kohler commode in our half bath.

    You didn't finish the sentence. It causes it to do what? Whatever happens it almost has to be a poor piping installation, not a toilet problem, per se, but a strong flushing toilet combined with an improper pipe installation could cause problems between the two toilets. And if so, ANY toilet could cause the same type of problem.
  3. cvonkantor

    cvonkantor New Member

    Messages:
    2
    It never happened before we installed the new AS Champion commode. Is there a good commode that doesn't have the strong flush that we can install to alleviate this problem?
  4. plumber1

    plumber1 Plumber

    Messages:
    1,423
    Location:
    Florida
    It's a drain/vent problem, not a toilet problem..........
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