Why doesn't my Michelin MPX 1700 pump reach working pressure?
- BbuckrobertJul 26, 2025
If your Michelin Pressure Washer's pump isn't reaching working pressure, several factors could be at play. Firstly, a worn nozzle can be the culprit, requiring a replacement. Secondly, a fouled water filter restricts water flow, so cleaning it is essential. Thirdly, ensure the water supply pressure isn't low by fully opening the water supply tap. Fourthly, air being sucked into the system can impede pressure; check the tightness of hose fittings. Finally, air trapped in the pump can cause issues; to resolve this, switch off the appliance, repeatedly depress and release the gun trigger until a steady water flow emerges, then switch the appliance back on.