Kärcher K7 Premium Pressure Washer: Pump Not Generating Pressure - Diagnosis

WARNING: ELECTRICAL HAZARD / HIGH VOLTAGE. This appliance operates with high voltage or residual charges. Physical intervention is extremely dangerous, and it is strongly recommended to entrust it to a qualified specialized technician to avoid electric shocks. ReeFix provides this diagnosis EXCLUSIVELY for educational and informational purposes.

OBSERVED SYMPTOMS

The Kärcher K7 Premium pressure washer motor runs regularly, but the pump fails to generate the necessary pressure at the lance outlet. Water may exit at low pressure or not at all.

WHAT TO RULE OUT

Before considering internal faults, it is crucial to rule out the simplest and most common causes:

• Insufficient Water Supply: Check that the tap is fully open and that the mains water pressure is adequate. A weak flow will not allow the pump to pressurize correctly.
• Clogged/Kinked Inlet Hose: Inspect the garden hose for any kinks, crushes, or blockages.
• Clogged Inlet Filter: Check the [Kärcher K7 Premium Inlet Filter](https://www.ebay.it/sch/i.html?_nkw=K%C4rcher+K7+Premium+Inlet+Filter&mkcid=1