If you need to know how to fix an old leaky kitchen sink taps, read this article. In this article, we'll go over how to identify a faulty faucet and how to repair it. To get started, close the drain of the sink and place a clean towel on the countertop to protect the surface. Then, take out the faucet handle and unscrew the screw that holds it to the stem. This will expose the cartridge that controls the flow of hot and cold water. You'll need an Allen wrench to remove the handle.