How To Find the Best Replacement Pressure Washer Pump. Our experts have put together a comprehensive howto guide on picking the perfect replacement pump for your power washer. Learn how to tell which type of pump you have and what replacement pump you need. Then, learn how to replace the pump yourself.
Dirt In The Pump – And What To Do. This is the single most common reason for low and no pressure in your pressure washer. Your pressure washer should have either a filter at the pickup end of the water tube or an inline filter (Fig. 2) Fig. 2 – Water Filter For Pressure Washer. where the hose enters the pump.