Skip to main content

Final Check and Test — Restore Water and Test for Leaks

Beginner

Part of project

How to Fix a Leak at a Faucet Supply Line Connection · Step 5 of 5

Helpful?

In this video

Slowly turn the water supply back on. Test the faucet by turning the handle through all positions: cold, warm, and hot. Let the water run for a few minutes to flush out any air or debris from the lines. Turn the water off completely and carefully check for any drips from the showerhead or leaks around the handle. It's a good practice to wait about 30 minutes to an hour to ensure no slow drips appear.

Goal: Home Repair

  • Turn the water supply on slowly to avoid a sudden surge of pressure that could damage connections.
1.1K views1610 minutes
replumb

719K subscribers

View Channel

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.

Final Check and Test — How to Fix a Leak at a Faucet Supply Line Connection (Step 5, Video 3) | Stesso