Repair Riot

Pressure washer diagnostic tool

Prepared by: Repair Riot Last updated: July 2026 How we build and check guides

Choose the power type and the clearest symptom. The tool will route you to a safer first check and the guide that best matches what the machine is doing. It does not identify a failed part from the symptom alone.

Before you start: Shut the machine off, point the gun in a safe direction, squeeze the trigger to relieve trapped pressure, and let hot pump parts cool. Never check a leak with your hand while the system is pressurized.

Find the right pressure washer guide

Use the symptom you can reproduce without leaving the pump hot or pressurized.

What this tool does not do

The selector routes symptoms; it does not prove that a pump, valve, gun, motor, carburetor, or control has failed. Confirm the model number and use the manufacturer's current instructions before ordering parts.