sewer odor frowm new tub drain

Discussion in 'Shower & Bathtub Forum & Blog' started by kolpek, Sep 16, 2009.

  1. kolpek

    kolpek New Member

    Sep 14, 2009
    I just replaced an old drum trap with a new p-trap and now am getting an occational sewr gas smell. what could be the cause?
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    Does the new trap have a vent? If not, it may be getting siphoned dry. Slowly pour some water down the drain and see if the smell goes away. If it does, the trap is likely getting siphoned out.
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  4. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona

    Unless you made some major error when installing the "P" trap, there should be no reason for it, assuming you have run water in the tub since then.
  5. Jay Mpls

    Jay Mpls Master plumber

    Sep 29, 2008
    Master Plumber /Sewer rat
    Does the tub gurgle when its drained? May be a venting issue.
    If it's exposed you will have your trap,then the vent and maybe next your waste pipe from the lav drain.Are your sure it is sewer gas?
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