I would check for a problem with the supply first. If the supply hose is kinked or your supply flow is poor then the pump will pulsate like this.
Tim
I would check for a problem with the supply first. If the supply hose is kinked or your supply flow is poor then the pump will pulsate like this.
Tim
But then it wouldn't work OK with the other lance either.
I bow to your greater knowledge of lances. I just know that with mine, if it's on a high flow setting, if the tap isn't turned on fully, the pump pulses as the input pressure drops below the minimum required.
Tim
Oh it will, but then all lances would display the same fault.
Only if they allowed the same volume of water through. If there were small differences then a "high flow" lance might cause pulsing whilst a low flow one wouldn't .
Tim
HPC's use a positive displacement pump. The flow rate is fixed.
A lance can only affect the pressure, not the flow.
There we are 2012 rides again. I blame Google. Brian
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Just to let you know your full stop button isn't working! ;)
I had a similar problem on mine. After much investigation on my part, I came to this Group (UK.D-I-Y) who diagnised the problem as a faulty O-ring inside the machine (causing a tiny leakage in the pressurised water course inside the machine).
Replacement of the O-ring proved to be impossible, and I bought a new pressure washer: I had reached the tipping point between "cost of a new one" and "hours that have already been spent, and may yet need to be spent, trying to fix this".
J.
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