Common Pressure Washer Faults

Published

Fault Diagnosis

Choose your fault below to see common causes and solutions.


Pressure washer does not start


Pulsating pump or pressure fluctuations


Low flow rate and chemical injection

Try the following steps:

  1. There could be air in the system. Try turning off the pump and holding the trigger open for a few moments, before turning it back on. If this does not fix the problem, continue to the following steps.
  2. Check that the water supply tap is open, and that the inlet valve is not blocked.
  3. Check if the nozzle on the lance is blocked. You could also try a new lance nozzle.

No pressure (Machine does not reach operating pressure)