Ran Machine without water: Lower pressure now

[cwenbass 14]

I have a craftman 4000 psi PW. I started it, it ran then died out. I did the same thing. Then I realized I forgot to tunr the hose on,. I turned the hose on, now the pressure is much lower. Anyy ideas? '

Thanks,

Chris

[Beth n Rod 1,279]

Two things.
A valve is not operating correctly (opening/closing) or one or more seals were damaged in the incident.

Either way, it needs to be taken apart and just replace the seals and valves and check if any of the pistons

have cracked.

How old is the unit (pump) and when was the last time you had anything like this work done?
 

Rod

[AidanHoude 0]

There is valve problem not work properly . Due to this it have a low pressure.

[RalphQ 5]

yep seals, valves cracked piston. Or if you are lucky some debris is clogging a filter. 

[mattspws 15]

I had the same thing happen here recently lucky for me it was just a valve not seating correctly.