A toilet keeps running because water is still escaping from the tank into the bowl or down the overflow tube. The usual causes are a worn flapper that no longer seals, a fill valve that never shuts off, or a float set too high. Fort Worth Plumbing can repair any of them in Fort Worth.
How do I find out which part is failing?
Take the tank lid off and put a few drops of food coloring in the tank water. Do not flush. Wait a while and look at the bowl. Color in the bowl means the flapper is leaking, because nothing else lets tank water slip past unseen.
If the bowl stays clear but you can hear or see water still trickling in, the problem is on the fill side instead. Look at the water level against the overflow tube, the open pipe in the middle of the tank.
What if water is running down the overflow tube?
Water sitting at or above the top of that tube means the tank is overfilling. Either the float is set too high or the fill valve has stopped closing. Lowering the float is a quick adjustment. A fill valve that ignores the float needs replacing, and the part is built to be swapped without removing the tank.
Is it the flapper chain?
Sometimes. A chain pulled tight holds the flapper slightly open, and a chain with too much slack can tangle under it. Give it just enough play that the flapper sits flat when the handle is at rest.
Which fixes are worth doing yourself?
Flappers and fill valves are the cheap parts, and both are within reach of a patient homeowner with the water shut off at the wall stop. Bring the old part to the store so the replacement matches, since flappers differ in size and shape between toilet models.
- Dye test shows color in the bowl: replace the flapper.
- Water level above the overflow tube: lower the float or replace the fill valve.
- Fresh parts and it still runs: the flush valve seat may be pitted or cracked, which is where a plumber earns the visit.
What does a running toilet cost if I ignore it?
It costs you in water on every bill, and the sound is often the only warning. Because the loss is slow and silent, many people find out only when the next statement arrives. Shutting the stop valve under the tank stops the loss while you sort out the repair.
Why does my toilet run for a few seconds and then stop, over and over?
That cycle is called phantom flushing. The flapper is leaking slowly, the tank level drops, and the fill valve tops it back up. Do the food-coloring test, and replace the flapper if color reaches the bowl.
Can I leave a running toilet until the weekend?
You can, but the water keeps flowing the whole time. Closing the shutoff valve at the wall stops it, and you can open it again only when you need to flush.
When should I call a plumber for a running toilet?
Call when new parts have not stopped it, when the seat inside the tank looks rough or cracked, or when the shutoff valve will not turn. In Fort Worth, Fort Worth Plumbing handles toilet repair.