High-Pressure Washer Losing Pressure: Check These Five Points First

Most high-pressure washers that "lose pressure" do not have a failed pump. Work from the outside in: first confirm the water supply is sufficient and the inlet hose is not kinked, then check whether the inlet filter is clogged and whether the nozzle is the correct size or has worn larger. A pressure regulator stuck in bypass will also dump pressure. Only after these checks should pump seals, valves or the motor be suspected — dismantling the pump head and any electrical work must be left to qualified service personnel. You can compare the standard nozzle and inlet requirements for your model on our Himore and Jingyu product pages, or send us the model, water source and symptoms and we will help you narrow down which of the five points is most likely.