Disconnect and Remove Old Faucet — Disconnect the Leaking Supply Line
Part of project
How to Fix a Leak at a Faucet Supply Line Connection · Step 2 of 5
In this video
Begin by locating the hot and cold water shut-off valves under the sink. Use a flathead screwdriver to turn the valve slots perpendicular to the pipe, shutting off the water flow. Next, position a basin wrench or faucet tool onto the mounting nuts securing the old faucet from below and turn to loosen them. Once loose, use pliers to loosen the supply line nuts from the shut-off valves. Finish unscrewing all connections by hand. With everything disconnected, go to the top of the sink and lift the entire old faucet assembly out.
Goal: Plumbing Fixture Repair
- Ensure the water is completely shut off before disconnecting any lines to prevent water damage.
Used in this video
- Screwdriver (Tool Type: Screwdriver, Screwdriver_Type: Flathead) — Turning the shut-off valves to stop the water supply.
- Basin Wrench or Faucet Tool (Tool Type: Basin Wrench, Basin Wrench Type: Standard) — Loosening the mounting nuts that hold the faucet to the sink in the tight space under the sink.
- Pliers (Tool Type: Pliers, Pliers_Type: Channel-Lock) — Loosening the supply line nuts from the shut-off valves.
- Gloves (Gloves: Nitrile) — Protecting hands during the repair process.
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FAQs
How long does a beginner typically need to fix a faucet supply line leak, and what's the most common hold-up?
For most beginners, this project takes about 30-60 minutes. The biggest time-consumer is often preparing the work area, ensuring the water is fully off, and carefully tightening the new connections to avoid overtightening or cross-threading.
The project mentions a 'Braided Polymer Faucet Supply Line.' Are there other types, and how do I ensure I get the right replacement?
Yes, supply lines come in various materials like braided stainless steel or PEX, which are also durable options. The most critical step is to match the length and the connector sizes (e.g., 3/8 in. compression x 1/2 in. FIP) of your new line to your existing one and the connections on your faucet and shut-off valve.
I've replaced the supply line, but it's still leaking slightly after installation. What's the first thing I should check?
First, ensure both nuts are snug but not overtightened; over-tightening can damage internal washers or threads. Confirm the supply line is seated straight without cross-threading, and visually check that the small rubber washer inside the faucet connection is present and intact, as this creates the primary seal.
Is it ever okay to just tighten the old leaky supply line connection instead of replacing the entire line?
You can attempt a slight turn with your wrench to see if it stops the leak, but if it's an older line or already tight, this often isn't a permanent fix and could worsen the leak. Replacing the inexpensive supply line ensures a fresh, reliable seal, especially if the internal washers are worn or compressed.
Disconnect and Remove Old Faucet — Disconnect the Leaking Supply Line
Part of project
How to Fix a Leak at a Faucet Supply Line Connection · Step 2 of 5
In this video
Begin by locating the hot and cold water shut-off valves under the sink. Use a flathead screwdriver to turn the valve slots perpendicular to the pipe, shutting off the water flow. Next, position a basin wrench or faucet tool onto the mounting nuts securing the old faucet from below and turn to loosen them. Once loose, use pliers to loosen the supply line nuts from the shut-off valves. Finish unscrewing all connections by hand. With everything disconnected, go to the top of the sink and lift the entire old faucet assembly out.
Goal: Plumbing Fixture Repair
- Ensure the water is completely shut off before disconnecting any lines to prevent water damage.
Used in this video
- Screwdriver (Tool Type: Screwdriver, Screwdriver_Type: Flathead) — Turning the shut-off valves to stop the water supply.
- Basin Wrench or Faucet Tool (Tool Type: Basin Wrench, Basin Wrench Type: Standard) — Loosening the mounting nuts that hold the faucet to the sink in the tight space under the sink.
- Pliers (Tool Type: Pliers, Pliers_Type: Channel-Lock) — Loosening the supply line nuts from the shut-off valves.
- Gloves (Gloves: Nitrile) — Protecting hands during the repair process.
Frequently Asked Questions
How long does a beginner typically need to fix a faucet supply line leak, and what's the most common hold-up?
For most beginners, this project takes about 30-60 minutes. The biggest time-consumer is often preparing the work area, ensuring the water is fully off, and carefully tightening the new connections to avoid overtightening or cross-threading.
The project mentions a 'Braided Polymer Faucet Supply Line.' Are there other types, and how do I ensure I get the right replacement?
Yes, supply lines come in various materials like braided stainless steel or PEX, which are also durable options. The most critical step is to match the length and the connector sizes (e.g., 3/8 in. compression x 1/2 in. FIP) of your new line to your existing one and the connections on your faucet and shut-off valve.
I've replaced the supply line, but it's still leaking slightly after installation. What's the first thing I should check?
First, ensure both nuts are snug but not overtightened; over-tightening can damage internal washers or threads. Confirm the supply line is seated straight without cross-threading, and visually check that the small rubber washer inside the faucet connection is present and intact, as this creates the primary seal.
Is it ever okay to just tighten the old leaky supply line connection instead of replacing the entire line?
You can attempt a slight turn with your wrench to see if it stops the leak, but if it's an older line or already tight, this often isn't a permanent fix and could worsen the leak. Replacing the inexpensive supply line ensures a fresh, reliable seal, especially if the internal washers are worn or compressed.