Good job you have fixed your leak.
Faucet shut off valve leaking.
If the valve leak persists turn off the main water shutoff valve then disconnect the valve and replace it.
Loosen the bonnet nut on the leaky shut off valve with an adjustable wrench.
Put a plastic tub under the leaking valve to reduce the water spillage on the floor while you work.
Once tight and in place turn the valve on and test the kitchen faucet.
However calling a plumber can be expensive.
Then fit an adjustable wrench onto the nut of the shut off valve and turn it counter clockwise at 1 8 to 1 4 turn at a time.
Pull the nut back to expose the valve s threaded spindle.
There should be no leaks and all should be good.
Then open a faucet on the lowest level of your house and another faucet on an upper level to drain the pipes.
Shut off the water at the main shutoff valve.
Place a bucket or a thick towel on the floor under the leaky valve just in case some residual water leaks out during work.
Reassemble the shutoff valve turn the main house valve back on and check for leaks.
Attach the water line from the faucet to the water supply shut off valve using plumbers tape.
This will tighten the packing nut and may stop the drip.
Avoid gumming up the inside of the shutoff valve.
Step 2 prepare to take it apart.
Ignoring minor leaks can waste up to three gallons of water every day and can also lead to permanent water stains and rot under your sink.
Close the main water supply to the leaky valve.
Then disconnect the supply tube from the shutoff valve.
These inexpensive little valves rarely get used and when they do sometimes they leak.
Support see jane dri.
Don t use any pipe dope or plastic tape on the valve stem s threads.
There s an easy way to fix it and you may want to give it a try.
Wrap teflon packing around the spindle then hand tighten the bonnet nut back into place.
If your water supply valve is leaking you may not need to replace it.
Shut off the circuit breakers to an electric water heater.
Turn the water supply valve under the sink off.
If you have a gas water heater turn the knob to the pilot position.
Turn the home water supply back on.
Use the wrench to firmly tighten the nut but don t over tighten it.
Required tools for this project.
Under sink shutoff valves also called fixture shutoffs or stop valves allow you to turn off the water to the sink or other fixture without having to use the home s main shutoff.