fix

Stop a running toilet in 10 minutes

About 10 minutes

A toilet that never stops hissing usually has one cheap part to blame. Here is how to find it without tools you don't own.

Printable steps & tools

Watch it done

How to Repair Toilet Tank Components · Ask This Old House

Watch it done → Practice now

Do these 3 things next

  1. Lift your tank lid and point at the fill valve, the float and the flapper out loud.
  2. Flush once and watch where the water goes — overflow tube or down into the bowl.
  3. Write the part you suspect on your phone before you buy anything.

Say it while you work: duna water

Steps

  1. Take the tank lid off and set it flat on the floor — it is porcelain and it breaks.
  2. Watch the water. If it is draining into the overflow tube, the fill valve is set too high.
  3. Bend or clip the float down about half an inch so the water stops an inch below the overflow tube.
  4. If water is leaking down into the bowl instead, the flapper is worn. Shut the supply valve, flush to empty, unclip the old flapper and press a matching one on.
  5. Turn the water back on, let it fill, and listen. Silence means you're done.

When to call a professional

Plumbing

Most of this is yours to do. Call someone licensed if any one of these is true — it's a judgement call, not a defeat.

  • You cannot find or fully close a shut-off valve.
  • Water appears in a ceiling, wall, or at the base of a fixture.
  • More than one drain in the house is slow at the same time.
  • The repair would mean soldering or opening a main line.
Open “Stop a running toilet in 10 minutes

General guidance only. Local codes and conditions vary. If work involves electrical, gas, structural, HVAC or plumbing systems — or if anything feels beyond your comfort — stop and hire a licensed professional.

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Want to learn this in Garifuna?

duna water

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