Spray nozzle leaks

It sounds like a kinked hose under the sink or a clogged nozzle. Unscrew the nozzle from the sprayer and check for calcium buildup. New parts can be purchased cheaply from the local hardware store, take the old parts in and a sales rep can help you with the correct parts. Some sprayers have replacement nozzles...unscrew the old and screw in the new.

have you tried to purchase a new hose it comes with the
sprayer head shut the water off so no possible leaks take the hose off and see if walmart has one

Where is it leaking? At the faucet or on the sprayer?

take old sprayer with you and you should be able to get one at a hardware or even at homedepot.most sprayers come apart. maybe the rubber ring is bad on inside of sprayer.

You need to turn the water off under the sink. Disconnect the sprayer hose from the threaded shank under the center of the faucet body. Pull the spray head out of the faucet. Contact Blanco to receive your faucet parts free.

The nuts used for capping off the sprayer attachment will bottom out and not seal. Unless there is tape or thread compound on the nut, it can spray a tiny jet up under the faucet when the faucet is activated. If there is clearly water leaking from above that, then the o ring for the spigot may be failing and need replacing. If this is the case, it will only leak when the faucet is activated. There is always the possibility of a crack in the casting of the faucet body; hope not:)

Having installed and fixed kwc domo faucets for years I'd probably take the spray head off of the hose, then look into the bottom of the spray head and see if the check valve is still there. It probably is. I used to use a thin screwdriver to pry the check valve out out.It will come out. You need to work at it a bit but these hold back a lot of water pressure and catch any crud coming down the water lines.
TL

Point your water line into a bucket and turn the water on at the wall. If you get a good flow, we'll go back to the faucet. No kinks in the supply lines, right? The reason I ask is this was reminiscent of a recent problem where my friend could get hot water to the faucet, and it would slowly go down to a trickle. The problem was that the supply hose had a bit of a kink in it, and got choked off when the line got hot.
OK, good flow into the bucket. Sometimes the supply lines can delaminate, and choke the water off as well. Since you have a sprayer faucet combo, make sure that the flex hose that dispenses the water, and has the weight on it to retract the nozzle back up doesn't have a kink either. Remove the spray nozzle, and try the faucet, holding onto the hose. It's possible that the spray selector could have a problem, so check the spray head and diffuser. With the water on, push the sprayer button, and see if the problem might be there. Remove the aerator on the end of the sprayer, and check the screens for pluggage. My guess is that the issue is in the spray head.
Best regards, --W/D--

although it is possible that the spray head has gone bad, it is more likely that the diverter mechanism inside the kitchen faucet needs replaced. When this part is defective, it allows full pressure from the faucet to go to sprayer head even though the sprayer is not triggered. The sprayer is not designed to handle full pressure when it is not spraying.

If you have a Delta faucet your diverter may need to be replaced. The diveter is located under the spout (see diagram)(this is not your faucet but works the same)



Here are the instructions:

1. Turn off water to faucet.
2. Remove handle.
3. Remove top cap.
4. Turning spout back and forth gently lift and remove.
5. Remove and replace diverter.

Hope this helps and please remember to rate this!