No Pressure
Nilfisk Pressure Washer
Severity: ModerateWhat Does This Error Mean?
No pressure on a Nilfisk is most often caused by a blocked spray nozzle, a kinked supply hose, or an air lock in the pump. Start by checking the nozzle and water supply.
How to Fix It
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Check the water supply tap
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Check the inlet hose
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Clean the spray nozzle
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Purge air from the pump
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Check the inlet filter
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Check for pump seal wear
Frequently Asked Questions
Why does my Nilfisk pressure washer surge instead of holding steady pressure?
Surging or pulsing pressure is caused by an intermittent air supply, a partially blocked nozzle, or a sticking pressure relief valve. Check the inlet connection for air leaks first.
How do I clean a Nilfisk spray nozzle?
Remove the nozzle and use the cleaning needle (stored in the nozzle body) to clear the jet orifice. Alternatively, soak the nozzle in citric acid descaler for 30 minutes and rinse.
Can a garden hose that is too thin cause pressure loss on a Nilfisk?
Yes — Nilfisk washers require a minimum flow rate from the supply hose. A hose narrower than 13 mm (half inch) or longer than 15 metres may restrict supply enough to reduce output pressure.