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Here is the video I recorded of my toilet: Toilet Problems

So about a month ago our dual-flush toilet suddenly stopped filling up properly. It takes forever to fill up and it doesn't even fill up properly anyway. What I have seen is that if I flush and I turn off the water supply, wait about five seconds, and turn it back on, the toilet fills up like normal and properly. If I flush again, then the water just fills up slowly again. So I'm not sure if someone could help me figure out what the problem could be. This is the first time having a dual-flush toilet and I'm not really sure what to do...

Here is the video I recorded of my toilet: Toilet Problems

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  • You are referencing the filling of the tank, yes? Is it just filling slow, or is there any other issue (like not filling all the way)? Jan 18, 2016 at 23:26
  • @JimmyFix-it Yes the tank is just filling very slowly and because the tank is filling up slowly the water in the actual toilet is low as well. The toilet doesn't fill up the way it should either.
    – Kari
    Jan 18, 2016 at 23:41
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    Could you post a picture of the components inside the tank, and also of the water supply valve and supply line? Jan 19, 2016 at 0:35
  • @JimmyFix-it I'll shoot a video and give you the link to the video! Give me a moment...
    – Kari
    Jan 19, 2016 at 14:59
  • @JimmyFix-it Here is the video I recorded of my toilet: youtu.be/iFsR5KEpINI
    – Kari
    Jan 19, 2016 at 17:05

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Don't worry, dual flush toilets aren't any different. It sounds like your Fill Valve (the tall thing on the left) is on its way out. You can do a new one with just big pliers & you'll need to replace the water hose from the wall to the toilet. $30 & 30-minutes, at the most, should get you back to normal. Or, call Roto Rooter if you don't do that stuff. It's common but not too predictable, every 10-years is a good preventative rule.

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    the "flush valve" is the mechanism that allows tank water to enter the bowl, effecting a "flush", usually on the right. I think you mean the fill valve (sometimes called the ballcock valve); the valve that fills the tank and controls tank water height. Jan 19, 2016 at 0:39
  • @Iggy Here is the video I recorded of my toilet: youtu.be/iFsR5KEpINI
    – Kari
    Jan 19, 2016 at 17:07
  • Great vid! Yeah your Fill Valve's seal or washer is going bad. Turning the water off & back on re-seats it. The flush then unseats it again when the pressure is released. One used to be able to tighten the seal back down with a big nut, but I just checked mine, which the same exact valve & that cheat is gone...planned obsolescence. Definitely get a new Fill Valve & Water Supply (you got it right) hose. Thanks for the vid again, extremely helpful.
    – Iggy
    Jan 19, 2016 at 17:29
  • @Iggy I'll get that fixed right away! Thank you for helping!
    – Kari
    Jan 19, 2016 at 17:40
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    Just because it's old. The rust on the collar, typically, would indicate that it's over 20-years old. It might make it to 30, but it's better to replace it now (then) than to have a leak or even full-flow burst.
    – Iggy
    Jan 13, 2021 at 13:33

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