There is no back up in sink or shower. Nothing using water is turned on. Flush handle is sometimes hard to press. Why?

  • Take an above looking down picture of the tank with the lid off. – mikeytown2 Dec 30 '14 at 7:00
  • Where is the air coming from? Or is it just the hiss of water running for a brief moment? Put some food coloring in the top tank and wait a few hours to see if it makes it to the bottom bowl. – BMitch Dec 30 '14 at 14:29

On the other hand, if you mean a hissing sound, that's probably a float valve not completely closing.

Metallic flush handles are sometimes hard to press after they corrode a bit or after excessive use; they form a catch that's been worn into their housing (plastic levers are less susceptible to this).


By air noises do you mean bubbling? If so, it could be that your drain vent is blocked -- possibly by a small animal that crawled in through the roof and died. That was my experience recently. When the vent is blocked gas will find other ways to escape the system. Unfortunately, that means into your home. In your case, it could mean through the toilet.

This sounds like a job for a plumber, who may need to get onto your roof and go in with a snake.

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