Dirt caught in the spring or a stuck shaft are the most common issues solved by simply removing the unloader and cleaning looking for issues.
Pressure washer thermal relief valve stuck.
Thermal relief valves are a must have for pressure washers when the water is supplied by a garden type water hose.
This just means that a thermal relief valve has been installed on your pump to prevent over heating.
If the valve sticks in the closed position the thermal relief valve frequently discharges hot water onto the ground because the unloader valve can t open to allow recirculation.
If the pressure washer doesn t develop adequate outlet pressure the unloader valve could be stuck open.
When the operator releases the trigger the pump s unloader diverts the water back to the inlet side of the pump.
The thermal relief valve is usually preset to discharge water when it reaches 195 degrees.
One of them is a sticking unloader valve.
This is referred to as a closed loop by pass.
Thermal relief valves are a must have for pressure washers when the water is supplied by a garden type water hose.
If the pressure washer doesn t develop adequate outlet pressure the unloader valve could be stuck open.
Thermal relief valves excessive heat.
If your pressure washer is not building pressure and the engine is surging there could be a few different causes.
Wait 5 minutes before using.