If the motor is running, it sounds like the problem could be.

Loss of drive to the pump. or Pump failure. (possibly stuck parts die to prolonged lack of use )

This may be no more than the vanes have stuck, if a rotary pump.

If a reciprocating pump, it may be that the piston rings have stuck / corroded.

Could be no more than sticking valve/s

Hopefully, freeing off the stuck parts will not be too difficult, and it will be restored to actiuon.

Howard

Edited By Howard Lewis on 09/08/2019 11:00:43

Beware if disassembling the pump that it is full of oil.

Mine gave up recently. The two of the three non-return valves were jammed open. There were lumps of dried scale, which had presumably slowly grown bigger over the years.

Carefully cleaned them out (the valves are fairly frail) with a pick and away it went. New valves are not too expensive and I think many pressure washers are discarded rather than being repaired. Plastic pumping heads are likely less worthy of repair – so much for the throw-away society of the present day!

The older pumping heads were far better than those on most modern cheap sets. They will likely withstand hot water . Mine has a metal pumping head – most are plastic these days.

Usual precursor to valve failure is that the pump restarts too regularly – the pressure switch holds it off at full pressure, but back-leakage causes regular motor restarts – not so good for a capacitor motor when every few seconds. Eventually the valves just don’t even allow pressure to be attained.

Bazyle is right with his warning. Keep it vertical (upside down) when removing the pumping head!

Soaking in warm/hot citric acid solution may be enough to dissolve the lumps, or at least a preventative maintenance job at regular intervals, if located in a hard water area.

Mine doesn't get used much (just look at the state of my car for confirmation!) but if it does not spray splitting the Lance in two and using the pricker on the jet itself will usually bring it back to life.

Just a suggestion before you get too far into the entrails if your machine.

I bought a pressure washer when I got a car with alloy wheels, the novelty soon wore off and now I have a car with dirty alloys occasionally cleaned by our hard working car washers from the EU.

Mike

Signs = what is observed

Symptoms = what the patent feels (subjective)

I'm retired, I should keep my mouth shut…

pgk

One aspect about power washers is that when used and put away they are left overwinter in a side shed. It freezes and the freezing water damages the pump.

Next door had this happen, as they are cheap he threw it away.

And there the Forum Falls Foul of Flexiloquent Folk partaking in a Floccinaucinihilipilification process….

Joe

'And there the Forum Falls Foul of Flexiloquent Folk partaking in a Floccinaucinihilipilification process…."

Our grandiloquent friend is surely mistaken: there was no ambiguity nor worthlessness opined. Pedantry perhaps, but correct usage of vocabulary seems to be a vanishing ability.

I was wondering where the worth was in :

I know. They were definitely signs to the owner, but are they then symptoms when the owner posts them on here?!

Yeah… but that would be his symptoms (sadness, ennui, financial anguish…) not the washer's . But doubtless a case for compensation from kaarcher for the mental distress, especialy if he can claim to be a minority such as an investment banker with too much money and a coke habit.

And the various bits of similar ilk, to the chap trying to find some help with his pressure washer…So , yes, rather worthless…and the vocab seems quite apt.

Joe

Suppressed Bob ??? Surely not !!!!