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HomeRepair HelpRepairPressure washer has no pressure Repair
Pressure washer has no pressure
If your pressure washer has no pressure, the pump assembly is the most likely problem. A worn or damaged pump cannot build the water pressure needed for effective cleaning, even when the engine or electric motor runs normally. If the pump is more than a few years old and you use the pressure washer often, replacing the pump assembly is usually the best repair. For a newer pump or a machine used only occasionally, rebuilding the pump or replacing the pump seals may restore pressure at a lower cost. A failed pump, worn pump seals, damaged pump valves, or a faulty pump head can cause a pressure washer to stop building pressure, lose pressure, or produce weak pressure. Before ordering parts, inspect the water inlet filter, inlet screen, garden hose connection, high-pressure hose, spray gun, and quick-connect nozzle for restrictions or damage. If those parts are clear and the pressure washer motor runs but no pressure develops, focus on the pump. Enter your model number to find the exact replacement pump assembly, pump, or pump seals for your specific pressure washer.
01 - Pump
You may need to rebuild or replace the pump assembly. If the pump is more than a few years old, and you use the pressure washer fairly often, replace the pump assembly. If the pump is relatively new, and you don’t use the pressure washer often, either rebuild the pump assembly or replace the pump seals.
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02 - Pump Assembly
You may need to rebuild or replace the pump. If the pump is more than a few years old, and you use the pressure washer fairly often, replace the pump. If the pump is relatively new, and you don’t use the pressure washer often, either rebuild the pump or replace the pump seals.
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Frequently Asked Questions
Why does my pressure washer have no pressure?
Why is my pressure washer losing pressure or not building pressure?
Should I replace the pressure washer pump if it has no pressure?
How do I find the correct pressure washer pump or replacement part?
What safety steps should I take before checking a pressure washer with no pressure?