Home>Discussions>PLUMBING>2nd floor bathroom sink no longer working after shutting off valves for work
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duppie
2nd floor bathroom sink no longer working after shutting off valves for work
duppie

When installing a new washer and dryer in the basement, i had turned off the inlet to the water heater, which prevented outflow. The heater is also in the basement.
I then accidentally opened the water in the sink on the second floor, cauesing what appeared the water to flow back downstairs where it exited the pipes near the washer.

After everything was hooked up, i turned the water inlet to the heater back on. Hot water flowed everywhere, except the sink on the second floor. Even the bath tub, which as far as I can tell is on the same water lines as the sink, has hot water. But not the sink.

Edit: the sink has a slow trickle when turned on. It stops when turned off.

Does anyone know what might be going on?

dj1
Re: 2nd floor bathroom sink no longer working after shutting off valves for work
dj1

Check the angle stops under the 2nd floor sink. Are they off or on?

duppie
Re: 2nd floor bathroom sink no longer working after shutting off valves for work
duppie
dj1 wrote:

Check the angle stops under the 2nd floor sink. Are they off or on?

They are on.

ed21
Re: 2nd floor bathroom sink no longer working after shutting off valves for work
ed21

What kind of faucet is on the sink? If a cartridge or single lever I'd take it apart and turn on the water to see if flushing the line will dislodge something. It's also possible something broke or some crud got into the cartridge.

HoustonRemodeler
Re: 2nd floor bathroom sink no longer working after shutting off valves for work
HoustonRemodeler

Whenever shutting off the water we always flush the lines.

Shut off the valve stop below the sink, remove the hot water fill hose at the valve, point the hose into a bucket, then turn on the cold faucet to push water backwards through the valve and hose to clear the obstruction.

duppie
Re: 2nd floor bathroom sink no longer working after shutting off valves for work
duppie

Thanks for the replies so far. I think the faucet is a compression type faucet. I will take it apart this weekend to see if something is blocking the water flow.

duppie
Re: 2nd floor bathroom sink no longer working after shutting off valves for work
duppie

I was able to fix it. Whele getting ready to take the faucet apart, I took the mesh/aereator off the spigot and it was filled with crud, probably dislodged when the water flowed backward. Removing it solved the problem.

Thanks all for pointing me in the right direction!

Mastercarpentry
Re: 2nd floor bathroom sink no longer working after shutting off valves for work
Mastercarpentry

I always remove the aerator when installing faucets for thus very reason. With most faucet valve designs, the usual crud will pass through the valve but won't pass through the aerator screen. And in a few cases these very same symptoms will occur when the rubber disc in the supply stop breaks up after you re-open it and causes a clog either there or in the faucet.

Reversing the flow usually cleans those out. I have a short piece of washer-supply hose cut in two connected to a garden hose sprayer with that thread on it's end and hold it in place where the aerator was while I squeeze the handle. Wrap a rag around there because you're going to soak everything including you if you don't! Sure beats taking the faucet back out for clearing the crud. Have a bucket to catch the water and drop the bottom of the supply tube in it and cover that with a towel to avoid splashing. So far it's always worked for me.

Phil

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