How to fix a Michelin MPX 17Eh when the pump does not reach working pressure?
- JJacob GomezAug 7, 2025
If your Michelin Pressure Washer's pump isn't reaching working pressure, several factors could be at play. Start by ensuring the water supply tap is fully open to provide sufficient water. Check for any air being sucked into the system by verifying the tightness of hose fittings. If there's air in the pump, switch off the appliance and repeatedly depress and release the gun trigger until the water flows steadily, then switch it back on. Also, make sure the adjustable nozzle is correctly set to the (+) position. Clean the water filter if it's fouled and replace the nozzle if it's worn. If you are using suction, reduce the suction height. If the thermostatic valve has tripped, wait for the water temperature to restore.