If your kitchen sink faucet has no water pressure, but the spray nozzle has good water pressure, the issue is likely related to the faucet itself. Here are some troubleshooting steps you can follow to identify and potentially fix the problem:
Check the Aerator: The aerator is a small mesh screen located at the end of the faucet spout. It can become clogged with mineral deposits and debris over time, causing reduced water flow. Unscrew the aerator from the spout and clean it thoroughly by soaking it in vinegar or using a small brush to remove any buildup. Then, reattach the aerator and check if the water pressure improves.
Inspect the Faucet Cartridge or Valve: The faucet's cartridge or valve might be partially blocked or damaged, leading to reduced water flow. Turn off the water supply to the faucet, disassemble the faucet handle, and inspect the cartridge or valve for any debris or signs of damage. Clean or replace the cartridge/valve as needed.
Check for Blockages in the Supply Lines: There could be obstructions or sediment buildup in the supply lines that feed water to the faucet. Turn off the water supply to the sink, disconnect the supply lines from the faucet, and examine them for any blockages. Flush the supply lines to remove any debris before reconnecting them.
Verify Water Pressure in Other Fixtures: Check the water pressure in other fixtures in your home, such as other faucets or showers. If you notice low water pressure throughout the house, the issue might be with the main water supply or a plumbing problem. In this case, you may need to contact a plumber to assess and address the issue.
Check the Shut-Off Valves: The shut-off valves under the sink may not be fully open, restricting water flow to the faucet. Make sure the valves are fully turned on to allow maximum water flow.
Inspect for Kinks or Damage: Check the flexible hoses that connect the faucet to the water supply and make sure there are no kinks or damage that could impede water flow. If you find any issues, replace the hoses if necessary.
If you've tried these steps and still haven't resolved the issue, it might be best to call a professional plumber to assess and fix the problem. They will have the expertise and tools to diagnose the exact cause of the low water pressure and implement the appropriate solution.