Stop Under Sink Kitchen Faucet Leaks Now
Is your kitchen faucet dripping constantly from the spout? Or do you notice water pooling under the sink only when the faucet is on? Pinpointing the source of the leak is the first step to fixing this common and frustrating plumbing issue.
In most cases, kitchen faucet leaks that occur only when turned on indicate worn out gaskets or O-rings around the faucet base. With a few tools and some determination, you can diagnose and repair leaky faucets yourself instead of calling a plumber.
Identify Where the Leak is Coming From
Start your inspection by turning on the kitchen faucet. Check the sink and surrounding countertop for any water droplets or obvious drips. Examine the area around the faucet base and look under the sink as well. Pay attention to any water pooling around the base of the faucet or moisture collecting on supply tubes.
If the leak only happens when the faucet is on, the likely culprits are the O-ring or gaskets inside the faucet body. These rubber seals fit between the outer chrome and inner brass components. Over time, they can become brittle or cracked. Replacing them restores the watertight seal.
Inspecting Faucet Components
To get a better look at the internal gaskets and O-rings, you'll need to disassemble the faucet. Start by shutting off the water supply lines under the sink. Then remove any decorative caps and the handle to access the faucet cartridge.
Carefully examine the rubber gaskets and O-rings around the cartridge and valve bodies. Look for any tears, flat spots, or degradation. Small cracks or missing chunks indicate it's time to swap in new gaskets.
Replace Damaged Seals
Removing the old gaskets and O-rings can take some effort. A small flathead screwdriver helps pry them out. Have replacement seals ready before reassembling the faucet and turning the water back on.
Match new gaskets to the size and configuration of the old ones. Lubricating seals with plumber's grease ensures a smooth installation and watertight fit.
Inspect Connections Under the Sink
While you have the sink plumbing exposed, take a close look at all the water supply connections. Tighten any loose fittings under the sink with an adjustable wrench or pliers. Replace any supply tubes or valves that show wear and tear.
Reattach the supply tubes securely to the faucet inlets. Leakage here means joints may need resealing with plumber's putty or Teflon tape. Take your time ensuring a proper seal.
On an ongoing basis, periodically clean the faucet valve seats and aerator to reduce mineral buildup. Use a 50/50 vinegar and water solution to dissolve any lime and calcium deposits before they can damage seals.
Installing protective sheathes around supply tubes can also help avoid wear and tear over time. And treating rubber gaskets and O-rings with conditioner keeps seals supple and leak-free.
While frustrating, fixing leaks under kitchen sinks is usually manageable as a DIY project. But if you can't determine the leak source or repairs are beyond your skill level, calling a professional plumber is wise. They can quickly diagnose and solve the issue, saving you from ongoing leaks and water damage.