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Why is Toilet tank is slow to fill?

Updated: 9/16/2023
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11y ago

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The most likely reason is that the water inlet is blocked. (It could also be that the water pressure is low, but that would show up in the sinks and every other faucet as well.) It might be blocked by mineral scale, or it might be that the inlet valve is partially closed.

I agree with the above answer. I would like to add another cause for slow filling. The Fluidmaster 400A or 400 Series fill valves has a seal or disc that can swell after it has been in use for several years. The swelling of the seal restricts the flow. A swollen seal will slow the flow of water through the valve. You can replace the seal (# 242), sold at local hardware stores. The back of the seal package has the steps for replacing the seal.

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Q: Why is Toilet tank is slow to fill?
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Why does the toilet bowl fill but the tank does not?

Sounds like the flap that allows water to enter the bowl from the tank, isn't sealing. If this is true, the water will be constantly running.


Why would bubbles come from the tank where the flapper is when you flush the toilet?

because there is a Dukie stuck in the bottom of the toilet so you have to take out your toilet and flush the system.


Can i refill a propane tank before it's empty?

The condensation line on the outside of a propane tank will show the level of fuel. The relative weight can also determine if it is time for a refill. A tank which is rusted or has valve damage should not be refilled.


Is toilet bowl water safe to drink?

It could have bacteria for obvious reasons, but in an emergency, you have about 8 gallons in your tank.


Why is the ice from your ice maker blue?

blue ice color can only be made by blue toilet cleaning soluions that have been frozen, food coloring will not freeze throughout the water and create solid blue ice like the toilet cleaner. The chemicals in toilet tank cleaners will. Other colors like rust or yellow ice comes from the same souce and spider ice are a conditions that occurs in a home when the ice maker will draw water for ice and the house water presure is low so the ice maker will draw from the toliet tank usally at night. the home has a toilet fill vlave conected to the cold water line and acts like a straw, the is because the homeowner does not have a code listed or mostly china knockoff fill valve in their toilet that are not anti siphon. The best way to not have an issues is to buy code listed valve, the most popular valve in home depot and lowes is the fluidmaster that also has this same issue when the valve is older than 5 years and the interior gaskets fails. if you are expericeing ice of a differnet color ask any plumber who can remidy with a toilet valve replacment

Related questions

My toilet tank won't fill back up. Are the pipes frozen or is there a corroded valve. How can I find out and what should I do?

replace the fill valve


Where do you put water in the toilet to fill?

You don't, it should com up the pipe joined to tank.


Your toilet will not fill up?

check that the toilet stopper has been switched on and check that the strainer inside the toilet inlet is clear of debris


Why does toilet fill by itself?

Most likely the flapper in the bottom of the tank is not sealing and letting water seep into the bowel.


Kohler powerflush toilet will not fill tank?

Check the flush valve to see if it is sealing tight. Check the fill valve to see if it needs to be rebuilt or replaced.


Why does the toilet bowl fill but the tank does not?

Sounds like the flap that allows water to enter the bowl from the tank, isn't sealing. If this is true, the water will be constantly running.


What do you do if your toilet fills up with water but doesn't go down?

First, try using a plunger to force the clog through the pipes. That could be all you need to do. Taking the toilet apart is pretty extreme. ---- Try to plunge water out or as much as you can. Shut off water supply to toilet. Dip remaining water out of toilet and toilet tank. Disconnect the flex line on the bottom of the toilet tank it should screw off by hand. Loosen bolts that hold toilet to the floor usually located on the left and the right at the base of toilet. It's best to have a new wax ring on hand to install once you pick toilet up from the floor. If you don't see your problem in the drain pipe, gently lay toilet down and look in the hole in the bottom of your toilet. I've see from spoons to chicken bones, don't forget your rubber gloves.


What is the width of a toilet tank?

The width of a toilet tank can vary in size. The average width of a toilet tank is about 18 inches.


Why would a first floor toilet gurgle when a second floor toilet is flushed?

The water in the lower toilet is probably being siphoned out of the tank by the negative pressure caused by flushing the upper toilet. This CAN happen if the water level in the tank of the lower toilet is over the top of the ballcock. If this is the case, the tank water is being siphoned into your drinking water! Replace the ballcock with a Fluidmaster right away. If you have a small white fill valve that sits in the bottom of the tank, get rid of it. These are illegal and WILL siphon under these conditions. If the lower toilet runs AFTER the fill cycle of the upper toilet, it may be that the ballcock seals at a lower pressure, and the pressure spike when the upper toilet shuts off causes it to run a bit until the added water closes the valve a little tighter.


What is the bolt that connects the toilet tank and the toilet bowl?

They are called tank bolts.


Name of the tank that holds water used to flush toilet?

Toilet tank


Does an American standard toilet tank fit a glacier bay toilet?

Will a American standard toilet tank fit a glacier bay toilet