Toilet slow to refill but flush is fine?

Question

My toilet's very recently began acting weirdly. AT the moment I can flush the toilet okay, but it's slow to refill. It refills on its own eventually (although it hisses while doing so). It stops hissing once it refills. I tried turning the water to the toilet on and off--that helps refill the toilet faster, so I'm not sure if there's a clog somewhere.

Earlier I tried fiddling with the Fluidmaster 400 as I read sometimes it can get clogged with sediment. It seems to be physically okay, so I'm not sure if the refill valve or flapper needs replacing or something else needs to be looked at.

Answer 1

Is the problem with your water valve, your feedline or under the rim of the bowl? Do you have hard water where you live?

Water valve: Check to see if the valve is turned on to full. Check the water line to see if there are any bends, or tie ups. May need replacing if it does.

Feedline (takes the water from upper tank to bowl rim, then into the toilet): Snake it with a plumbers snake to break up calcium build up. If you have hard water it can create calcium build up and can cause clogs.

Under the rim of the bowl: Use toilet brush, steel wool or wire brush to clean under the rim along with some toilet bowl cleaner. Flush several times, repeating till clean. Then dump some CLR (Calcium/Lime/Rust) Remover down the bowls feed line (and on the underside of the rim outlets) and let it sit for a little bit to dissolve the calcium build up. Flush repeatedly to remove excess build up and CLR Remover. Repeat CLR steps as needed. Re-scrape the underside of the rim. Then use a big pot of "near" boiling water (never boiling water) to flush the feedline and rim outlets a few times. CLR Remover can leave a film behind so this is necessary to do to prevent further clogs. But be careful to not get burned while doing this.

Answer 2

sediment build up in feed pipe, like you said if you turn the water off then on it fills faster, do this about 2 or 3 times to see if the lime will break up,  

Answer 3

Sounds like the refill valve needs to be replaced.  this part comes in a kit that cost around 20 bucks

Answer 4

first disconnect the  supply line to the toilet and see if you get plenty of water out of the tubing.. sometimes the tubing gets twisted when installed and blocks most of the water. if so you need to replace water supply line from valve to tank.

Answer 5

You said it is a fluidmaster,  there is a small gasket in the top of the unit that may have to be replaced, you can buy them at home depot for about 3.00 replacing it is simple enough , turn off the water and flush toilet , the top part twists off can  be a little stubborn just be careful not to break the plastic  when twisting the top off, remove the old gasket/seal and replace it  then replace the top turn on water and it should work fine