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last week I heard a kind of hissing sound coming from my toilet. I don't use that toilet much so I just turned off the water from the bottom and the noise stopped. Well I really can't believe this but now my other toilet is hissing even louder. I don't see any leaking in the tank just noise coming from around the red cap on the toilet.

I took a video and put it on youtube so you could hear the sound.

I could really use some advise on this, I'm not feeling well these days and really don't need this added stress. I called a plumber and he said he would take care of both toilets for 220 but I really only want to spend that much if it's really necessary. Thanks in advance. .

  • why did you not include a link to the video? – jsotola Aug 17 at 4:17
  • turn the water back on, but only partially – jsotola Aug 17 at 4:22
  • i found the video ... i don't hear any abnormal hissing ... do you by chance wear a hearing aid? – jsotola Aug 17 at 4:24
  • no hearing aid, there is a hissing sound but it's hard to pick up on video I guess. – C. Davis Aug 18 at 2:43
  • I didn't post the link because I didn't know if it was allowed on this website – C. Davis Aug 18 at 2:45
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I don't know what a "red cap" is on a toilet, but if it's hissing then water is passing somewhere and the most likely is that the float-valve is letting through.

It might stop if you bounce it a couple of times, if some grit has got in the mechanism, but otherwise it's a new valve or washer/diaphragm depending on the type of valve.

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