In general, the most common reason for a pressure washer not building pressure is that it is not getting enough water. This can be due to a hose problem, leakage, or blockage. Another reason can be air can get trapped inside the pressure washer pump or a problem with the nozzle.
How do I know if my pressure washer pump is bad?
Several indicators will show a faulty pressure washer pump. The most common is a leak, pulsating output pressure, and low output pressure. Leaks are often caused by a worn or damaged pump seal. A pulsating pressure indicates that there is not enough water in the pump.
What is the most common problem with pressure washers?
Many pressure problems begin and end at the unloader. A cracked o-ring, dirt caught in the spring or a stuck shaft are the most common issues solved by simply removing the unloader and cleaning/looking for issues.
Why is my Simpson pressure washer not building pressure?
Your SIMPSON may be operating in low-pressure due to an incorrectly sized nozzle or a nozzle that has worn out. Always replace any worn or broken nozzles as they can potentially be a safety hazard. ALWAYS use accessories that are within your pressure washer’s PSI range.