Troubleshooting Your Gas Pressure Washer

Answers to common troubleshooting questions about your Simoniz pressure washer. Always remember to disconnect the device from the power source before troubleshooting your pressure washer.

Select the issue you’re having:

CauseSolution
The engine power switch is in OFF (0) positionEnsure the switch is in ON (I) position
No fuelFill the fuel tank with regular gasoline
Excess water pressure in pump or hoseRelease water pressure by squeezing trigger on gun
Choke lever not in right position1. When cold starting the engine, set the choke to CLOSE or OFF

2. When warm starting, set the choke to OPEN or ON or try the middle position
Clogged carburetorClean the carburetor. Refer to the instruction manual
Carbon build - up on spark plugClean the spark plug. Refer to the instruction manual
Incorrect starting methodUse correct starting method. Refer to the instruction manual
Choke lever in Close positionUse correct starting method. Refer to the instruction manual
CauseSolution
Clogged air filterClean or replace the air filter. Refer to the instruction manual
Clogged carburetorClean or replace the carburetor. Refer to the instruction manual
CauseSolution
Carburetor is cloggedClean the carburetor. Refer to the instruction manual
CauseSolution
Recoil mechanism is brokenCall the Toll-free Hotline, 1-866-474-6664.
CauseSolution
Clogged nozzleClean nozzle with tip cleaner
Pressure is too highCall the Toll-free Hotline, 1-866-474-6664.
CauseSolution
Nozzle tip not attachedAttach required nozzle tip
Water supply faucet closedTurn on faucet. Ensure there are no kinks or blockage in hose
Water supply pressure is lowEnsure faucet is fully opened. Check to make sure water supply is a minimum 30 psi, 4 GPM
Inlet water filter is cloggedClean the water filter. Refer to the instruction manual
Air in pumpSqueeze trigger to release the air in pump when the machine is running
Clogged check valveCall the Toll-free Hotline, 1-866-474-6664.
Damaged pumpCall the Toll-free Hotline, 1-866-474-6664.
CauseSolution
Clogged nozzleClean nozzle with tip cleaner
CauseSolution
Damaged seal ringCall the Toll-free Hotline, 1-866-474-6664.
CauseSolution
Defective thermal relief valveCall the Toll-free Hotline, 1-866-474-6664.
CauseSolution
The detergent siphon tube is not connectedConnect detergent siphon tube properly. Refer to the instruction manual
Damaged detergent siphon tubeReplace the detergent siphon tube
Wrong nozzleUse black nozzle when applying detergent. Refer to the instruction manual
Detergent adjustment knob set to wrong positionCheck adjustment knob. Refer to the instruction manual
Clogged nozzleClean nozzle
Clogged pump detergent siphon fittingDetach the detergent siphon tube and clean the fitting with tip cleaner
Detergent is too thick. Clogged detergent filter.Use only detergent approved for use with pressure washer
CauseSolution
Safety lock is not openOpen the safety lock. Refer to the instruction manual
CauseSolution
Damaged seal ringChange with back-up O-ring or purchase accessory kit SKU#.039-8552-8 at local Canadian Tire Store
CauseSolution
The O-rings are not lubricatedPut lubricating oil or water on the O-rings
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