there may be an issue with the hose or the weight that is attached to the hose under the sink. Here are some steps you can follow to troubleshoot the issue:
Check the weight: There should be a weight attached to the hose under the sink. This weight is designed to help the hose retract back into the faucet. If the weight is loose or not in the correct position, it can affect the retracting ability of the hose. Make sure the weight is securely attached to the hose and is in the correct position.
Check the hose for obstructions: The hose may not be retracting properly due to an obstruction. Turn off the water supply to the faucet and disconnect the hose from the faucet. Carefully inspect the hose for any kinks or blockages. If you find any obstructions, gently straighten out the hose and remove the blockage.
Check for damage to the hose: The hose may not be retracting properly due to damage. Check the hose for any visible signs of wear and tear, such as cracks or tears. If the hose is damaged, it will need to be replaced.
Lubricate the hose: Over time, the hose can become dry and lose its flexibility. Apply a small amount of silicone lubricant to the hose to help it move more freely.
If it is a press and lock style, some of them can be pulled out and adjusted to make for more clearance so the locking mechanism has room to work. If it's the style that uses a pull rod from behind the spout, then the circular nut that holds the pop-up rod into the drain directly under the sink. If that's loose, then it won't allow the pop up to stay in place. Hope this helps
The drain pipe may not have been installed correctly - the slope may be wrong, or the pipe may be too small, or you may have too much backpressure, or if you have a septic tank it may be full and need pumping, or any number of other possible problems. You might have another plumber come for an assessment and opinion - make it clear that you don't necessarily intend to hire them to do any WORK, you just want their opinion. Then they won't try to sell you all new plumbing to replace what you just bought...
Corrosion/hard water scale has built up between the slotted shaft and the handle .... "cementing" it in place.
A faucet handle puller may help depending on your design. This video shows how for a 2 faucet sink setup...but your 1 faucet handle should be similar. The puller will ONLY work though if you can access the end of the slotted shaft to get leverage from. Can you remove an end cap from the handle to access the shaft? ...
If the puller will not work ....
You could try penetrating oil (if you can get the oil to the corrosion) ... or if your handle is metal, cover it with a wash cloth to prevent marring and tap with a brad hammer. Sometimes that breaks the corrosion bond.
You could also try heat/cold/heat/cold by heating with a hair dryer followed by a bag of ice water and then repeat. The temperature cycling might help.
In a real pinch ... but you have to VERY careful ... use a pry bar between the escutcheon plate and the handle...go slow .... use cloth protection to prevent marring ... move the pry bar around and rock it....say at 12, 3, 6, 9 o'clock positions around the handle
AND .... when you are successful ... when you reinstall ... put some silicon plumbing grease on the shaft to prevent future corrosion!
You usually can un-screw the hand sprayer, hold on to the hose! If there is more water coming out of the hose then you might have a plugged screen right inside the removed end or the total head is filled with hard water minerals. CLR at Walmart does desolve scale.with out hurting parts.
