A moment later, Leo pulled out the rag. They turned on the tap, and whoosh — perfect pressure.

If you’re dealing with a stubborn airlock, don't panic. You usually don’t need a plumber to fix it. Here is a straightforward guide on how to clear an airlock using three different methods. What is an Airlock?

This technique uses the high pressure of a working cold tap to force air out of an affected hot tap. How do you remove an airlock from water pipes? - WaterSafe

Here is how to evict the ghost from your plumbing, using methods ranging from the gentle to the "nuclear option."

Always push the airlock backwards toward the tank. Don’t try to suck it out. Use higher pressure (cold mains) to bully the air back where it came from.

: Water comes out in bursts mixed with air pockets.

Turn off the cold tap first, then the hot tap, and carefully remove the hose. Method 3: The "Taps and Toilets" Method

Sometimes the sudden drop in pressure followed by a surge can "burp" the air bubble out of the system. How to Prevent Future Airlocks