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Leaky Faucet Repair Guide

mediumHome Repair1 hr

Stop wasting water and eliminate annoying drips with this comprehensive leaky faucet repair guide. Designed for homeowners and DIY beginners, this tutorial teaches you how to disassemble your fixture and replace worn components to restore a perfect seal. You will learn the step-by-step process of identifying and swapping washers, O-rings, or cartridges to fix your faucet quickly.

Safety Warnings

  • Ensure water supply is completely shut off before disassembly to avoid flooding and water damage.
  • Avoid overtightening connections as this can crack parts or strip threads.

Tools Needed

Adjustable Wrench — 8-inch
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Phillips #2 Screwdriver — Cross-head driver for handle screws
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Flathead Screwdriver — Standard slotted driver for trim removal
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Needle-nose Pliers — Long-jaw pliers for circlip and clip removal
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Hex Wrench — Compatible size
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Materials

Plumber's Grease — Waterproof silicone(1 tube)
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O-rings — Matching size(As needed)
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Replacement Washers — Assorted rubber/neoprene(1 kit)
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Plumber's Tape — Teflon(1 roll)
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Replacement Cartridge — Model specific(1 unit)
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Steps

1
Turn off the water supply by rotating the shut-off valves under the sink clockwise. Open the faucet to release any remaining water and pressure from the lines. Place a towel or plug over the drain to prevent small parts from falling in.
2
Remove the handle. Pry off the decorative cap using a flathead screwdriver to reveal the screw. Use a Phillips #2 screwdriver or hex wrench to remove the fastener, then lift the handle off. If the handle is seized, apply penetrating oil to the threads.
Decorative cap Handle Flathead tool Pry off cap Pry off the decorative cap to reveal the handle fastener.
3
Disassemble the internal components based on your faucet type: For compression faucets, remove the stem nut with a wrench and pull out the stem. For ball faucets, remove the cap and collar to expose the ball, cam, and washer. For cartridge faucets, remove the retaining clip with needle-nose pliers and pull the cartridge out. For ceramic-disk faucets, remove the escutcheon cap and unscrew the disk cylinder.
Retaining clip Cartridge Valve body Pull out clip Remove the retaining clip to release the internal cartridge.
4
Inspect and replace worn parts. For compression types, replace the seat washer and O-ring. For ball types, replace the inlet seals, springs, and cam washers. For cartridge types, replace the O-rings or the entire cartridge. For ceramic-disk types, clean or replace the neoprene seals. Tip: Take old parts to the hardware store to ensure an exact match.
Stem body Worn O-ring New O-ring Swap seals Match size exactly Remove degraded rubber seals and replace with identical new parts.
5
Lubricate and install new components. Coat new O-rings and washers in plumber's grease to improve the seal and longevity. Reinsert the repaired or new internal components (stem, ball, cartridge, or cylinder) into the valve body, ensuring they are seated correctly.
Valve body Cartridge Plumber's grease Insert slowly Lubricate O-rings and slide the cartridge into the valve body.
6
Reassemble the faucet by replacing the nut, collar, handle, and decorative cap in the reverse order they were removed. Tighten all fittings snugly, but do not overtighten to avoid cracking the parts.
Stem nut Handle Valve body tighten snugly Reassemble components in reverse order and tighten without over-torquing.
7
Test the repair by turning on the water supply valves. Run the water for several minutes to flush out air and debris. Turn the faucet off and check both the spout and the handles for leaks. If the leak persists or you are uncomfortable with the repair, call a professional plumber.

Pro Tips

  • Lay parts out in the order they were removed to ensure correct reassembly.
  • Use a microfiber cloth and vinegar to clean mineral deposits from faucet parts before reinstalling.
  • Photograph each step of the disassembly process to reference during reassembly.

When to Call a Professional

If the faucet continues to drip after replacing all washers and cartridges, or if you encounter stripped valve seats, call a licensed plumber.

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