Fix it
Pressure Washer Not Working? Fixes That Actually Help
Diagnose the common electric pressure washer failures: no pressure, pulsing, leaks, and motor issues.
Most electric pressure washer failures trace to water supply, air in the system, or clogged nozzles, not dead motors. Work through these fixes in order before assuming the unit is finished.
Motor runs but there is little or no pressure
First, purge air: with the unit off, connect water, squeeze the trigger until water flows steadily, then start the motor. Next, check the nozzle for clogs: remove it and clear debris with the included cleaning needle or a fine pin. Finally, verify your water supply: a kinked garden hose or a half-open spigot starves the pump. The pump needs full household flow to build pressure.
Pressure pulses or surges
Pulsing almost always means air in the system or a partially blocked nozzle. Purge air as above, clean the nozzle, and check the inlet filter screen where the garden hose connects: sediment there restricts flow and causes surging. If pulsing persists with a clean system, the unloader valve may be sticking, which is a service-center job.
Water leaks from connections
Leaks at hose connections are usually worn or missing O-rings. Inspect the rubber O-ring inside each quick-connect fitting; replace it if cracked or flattened (replacement O-ring kits are cheap and universal). Hand-tighten plus a quarter turn: over-tightening with tools cracks plastic fittings, which is the most common cause of new leaks.
Motor will not start or trips the breaker
Check that you are on a dedicated 15-amp circuit: pressure washers draw near the circuit limit, and sharing it with other loads trips breakers. Use a 12-gauge extension cord under 25 feet if you must extend; thin long cords cause voltage drop that stalls motors and can burn them out. If the motor hums but will not turn, unplug it, relieve pressure via the trigger, and try again.
Questions, answered
Why does my pressure washer keep shutting off?
Thermal overload is the usual cause: the motor overheated and its protector tripped. Let it cool 15 to 30 minutes. If it happens quickly every time, you may be running too long continuously for a universal motor, or the pump is starved of water.
Can I leave water in the pump between uses?
Between sessions in warm weather, yes, briefly. Never store it with water inside where it can freeze: expanding ice cracks the pump housing, which is not repairable. For winter storage, run pump antifreeze through it or store it indoors.