The answer to 'pressure regulator clogged' is that a clogged pressure regulator is a common plumbing issue that can cause low water pressure throughout your home. This is often caused by mineral buildup, debris, or corrosion inside the regulator. Symptoms include decreased water flow, inconsistent water pressure, and sometimes water leaks.
To fix a clogged pressure regulator, you may be able to clean it yourself, but in some cases, the regulator will need to be replaced by a professional plumber. Trying to disassemble and clean the regulator yourself can be tricky and may require special tools. If you're not comfortable doing this, it's best to call a licensed plumber to inspect and service the pressure regulator.