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Running Toilet Fix - Water Constantly Flowing

Sesión públicaSesión #32313/1/2026👁️ 217 vistasProblemas de reparación y mantenimiento del hogar
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AI Analysis Summary

The upstairs toilet continuously refills the tank after flushing, indicating a leak in the tank's sealing mechanism. The handle being in the normal position suggests the issue is not with the handle linkage itself.

Problema reportado

My upstairs toilet keeps running after flushing, even though the handle is in the normal position. I can hear the water refilling the tank continuously.

Preguntas

5 preguntas
Q1

When you lift the toilet tank lid, do you see water constantly flowing over the overflow tube? (ID: 1739)

Yes, when I lift the lid, I can see water trickling down into the overflow tube. It's not a gushing stream, but it's a steady flow, which is what I assume is causing the tank to keep refilling. It's definitely not just a little bit of residual water.

Q2

Does the toilet run continuously, or does it stop for a short period before starting again? (ID: 1740)

It seems to be running continuously. I don't notice it stopping at all. As soon as the tank refills after a flush, the hissing starts again, and I can hear the water refilling the tank. It doesn't seem to take a break.

Q3

Have you recently made any adjustments to the toilet's internal components? (ID: 1741)

No, I haven't made any adjustments to the toilet's internal components recently. The last time I touched anything in there was probably a few months ago when I replaced the flapper, and that seemed to fix a different issue at the time. This running problem is new.

Q4

Is the water level in the tank higher than it should be, potentially reaching the top of the overflow tube? (ID: 1742)

That's a good question. I haven't really paid close attention to the exact water level before, but now that you mention it, it does seem a bit high. I can't say for sure if it's reaching the very top of the overflow tube, but it's definitely closer than I remember it being.

Q5

Can you hear a faint hissing sound coming from inside the tank when it's running? (ID: 1743)

Yes, I can definitely hear a faint hissing sound coming from inside the tank. It's not super loud, but it's consistent and seems to be coming from the fill valve area.

Causas identificadas

3 causas
#1

Válvula de aleta defectuosa

90%

La válvula de aleta en la parte inferior del tanque es responsable de sellar el tanque y evitar que el agua entre en la taza. Si está desgastada, deformada o no asienta correctamente, el agua se filtrará continuamente en la taza, activando la válvula de llenado para reponer el tanque.

#2

Válvula de llenado mal ajustada

60%

La válvula de llenado controla el agua que entra en el tanque. Si está ajustada demasiado alta, el nivel del agua excederá el tubo de rebosadero, provocando un vaciado continuo. Alternativamente, una válvula de llenado defectuosa podría no cerrarse por completo.

#3

Tubo de rebosadero agrietado o dañado

30%

El tubo de rebosadero es una característica de seguridad que evita que el tanque se desborde. Si está agrietado o dañado, el agua puede filtrarse del tanque a la taza, lo que hace que la válvula de llenado funcione constantemente.

Soluciones recomendadas

6 soluciones
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Replace Fill Valve

95%Official
If the fill valve is old or appears to be malfunctioning (e.g., not shutting off), consider replacing the entire fill valve assembly.

🤖 AI Analysis

"The user hears a 'faint hissing sound' coming from the fill valve area and observes water continuously flowing into the overflow tube, indicating the fill valve is likely not shutting off properly. This is a direct symptom of a faulty fill valve."

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Adjust Fill Valve Height

85%Official
Locate the adjustment screw or clip on the fill valve and lower the water level so it's about 1/2 inch below the top of the overflow tube.

🤖 AI Analysis

"The user notes the water level seems 'a bit high' and water is trickling into the overflow tube. Adjusting the fill valve height is a common fix for this issue, as it can prevent the water from constantly entering the overflow tube and thus the bowl. This is a good first step before replacement."

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Inspect Overflow Tube

70%Official
Carefully examine the overflow tube for any visible cracks or damage. If found, the entire flush valve assembly will likely need to be replaced.

🤖 AI Analysis

"While the primary symptom points to the fill valve, the observation of water flowing into the overflow tube could also indicate a damaged overflow tube. This solution addresses that possibility, though it's less likely than a fill valve issue given the hissing sound."

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Replace Flush Valve Assembly

65%Official
If the overflow tube is damaged, the entire flush valve assembly (which includes the overflow tube and flapper seat) needs to be replaced.

🤖 AI Analysis

"This is a more drastic solution that is only necessary if the overflow tube is damaged. Given the user's description, a faulty fill valve is a more probable cause. However, if inspecting the overflow tube reveals damage, this would be the next step."

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Inspect and Clean Flapper

30%Official
Remove the flapper and check for any debris or mineral buildup. Clean it thoroughly and re-seat it to ensure a proper seal.

🤖 AI Analysis

"The user mentioned replacing the flapper a few months ago for a different issue. While a faulty flapper can cause running toilets, the primary symptoms described (hissing from fill valve, high water level, continuous running) do not strongly point to the flapper in this instance. It's a less likely cause for the current problem."

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Replace Flapper

25%Official
If the flapper appears worn, cracked, or deformed, replace it with a new universal flapper. This is a common and inexpensive fix.

🤖 AI Analysis

"Similar to solution 1774, replacing the flapper is a common fix for running toilets, but the specific symptoms reported by the user (hissing from the fill valve area, water level being high) make this a less relevant solution for the current problem."

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