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How To Fix A Leaky Gooseneck Sink

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A gooseneck faucet is so named because it has a high spout that commonly extends several inches over the sink. This deep design allows taller pots to slide under it easier. However, you may find them leaking, which can usually be traced to broken O-rings or cartridge deterioration.  It is simple to repair the annoying drip yourself and save on waste bills. Follow these steps to fix a leaky gooseneck sink. 

Prepare to Fix the Sink

To repair the leaking sink, gather:

  • plastic gloves
  • rags
  • Phillips screwdriver
  • rubber strap wrench, hex wrench, or Allen wrench
  • pliers plumber's grease
  • O-rings (optional)
  • replacement cartridge 

Look under the sink for the two oval shut-off valves, and turn hot and cold to the right to shut off the water. Verify the faucet is off by turning the handles. If you can't find the valves, shut off the main water supply. Check under the sink for loose hose connections,and tighten them.

Remove the Spout

Use a Phillip's screwdriver to pry the handle caps off, then remove the handle retaining screw with the screwdriver or Allen wrench. Be careful to not loosen the washer on the outside of the cap. If you have a single-handle model, find the hex screw under the handle, and remove it with a hex wrench. 

You may need to remove a handle sleeve or adapter (commonly a cone-shaped or cylindrical piece), gaskets, and bonnet on some models. Loosen the bonnets and gaskets by turning it to the left, using pliers to turn the parts, if needed, and set parts aside. The adapter or sleeve should slide off the handle. 

Insert the strap wrench on the spout, make it tight over the escutcheon (metal plate that hides the hole in walls), and rotate the strap left to loosen the spout. Remove the spout from the faucet, and lay it aside. 

Replace the O-Ring and Cartridge

Leaks from the spout or the tip commonly indicate damaged O-rings. Detach the damaged rubber O-rings, cutting it off, if needed. Apply a thin coat of plumber's grease on the new O-ring, and slide it in place of the old one. 

Set the spout back in place, and tighten the escutcheon. Wipe where the spout sits with a rag, reinstall the faucet handles, gaskets, sleeve or adapter, and test the faucet.

To replace the cartridge, rotate the hex nut on the handle to the left to loosen it, then pull out the cartridge. Insert the new cartridge, and tighten the nut slightly by hand, then finish tightening it with the hex wrench. Replace the escutcheon,  the handles, and tighten the handle screws. Restore the water, and test the faucet.

Contact a service, like Michigan Plumbing Sewer & Drain Cleaning Inc, for more help.