Pressure washer soap injector not working: Common Causes & How to Fix

Repair Instructions:

You'll need to replace the whole chemical injection piece. The injection kit has all the parts to fix most issues with the injector setup. If the injector is clogged or leaking, get a new kit. That complete set includes everything for the system.

How to Replace Pressure Washer Chemical Injection Kit

1. Shut off water supply. Turn off the water to the pressure washer to relieve system pressure before disconnecting any fittings.
2. Disconnect tubes. Remove the tubing connecting the existing injector to the pump and nozzle. May require pliers to loosen clamps.
3. Remove injector. Unthread the injector from the water line. Some models use locking clips instead of threads that need to be removed.
4. Install new injector. Apply thread sealant if needed and install a new injector into the water line opening. Replace any locking clips.
5. Connect tubes. Use the provided tubing to reconnect the new injector to the pump outlet and nozzle water inlet. Secure with clamps.
6. Prime chemical tube. Place the chemical suction tube into a container and prime the tube by squeezing the injector a few times.
7. Adjust ratio. Turn the chemical adjustment knob to set the desired chemical-to-water dilution ratio.
8. Restore water supply. Turn the water back on and check all connections for leaks before applying pressure.
9. Test operation. Operate washer and spray nozzle to verify proper chemical injection. Adjust as needed.