The answer to 'why is my faucet making gurgling noise' is that it's likely caused by a blockage or obstruction in the plumbing system. A gurgling faucet is usually a sign of an air bubble or clog somewhere in the pipes, often caused by a buildup of debris, mineral deposits, or a partial blockage.
The gurgling sound is created when air is forced through the water flow, which can happen if there's a clog or obstruction preventing the water from flowing freely. This can occur in the faucet itself, the sink drain, or further down in the plumbing system.