Pressure washer stopped building up pressure

https://www.repairclinic.com/RepairHelp/Pressure-Washer-Repair/25-303--/Briggs-Stratton-Pressure-Washer-Troubleshooting

The unloader on yoru pump is bad.. Pressure washer parts catalog quick links Pressure Washers High Pressure... go here with your model number on your pump and they can guide you to your new unloader. Good luck

You have a defective pressure release valve or someone has misadjusted.

Check reset. alot of machines of this type have one. Also the pressure sensor or relief valve is designed to stop the motor if to much pressure builds up in system. May check this in your manual..

Not knowing exactly what type of pressure washer you have, most are equipped with an "unloader valve" so the pressure bypasses. If this is malfunctioning, the pressure will build up and bog the engine down.

Hello, W/D here.

Sounds like it may be air locked. Connect the hose to the washer. Connect the wand and hose to the washer. Open the supply water, and hold down the trigger on the spray wand. Be patient, this can take several minutes.
Now crank the washer.
Best regards, --W/D--

first check that there is fuel in tank.
then check that the fuel tap is turned on.
check the spark plug,if it has a build up on it then replace.

Check crankcase vent. Possible pressure building up in crankcase causing blow-by across piston.

Is you nozzle plugged? That is what this sounds like.

CHECK THE INTAKE FILTER-MAY NEED A NEW ONE.