[Shop-talk] Gas Pressure Washer problem

[Matt]

Good tips!
Engine oil is good.  I don't think the engine is the problem.  The tip back methodology makes sense. I am thinking a problem with the trigger valve...  I will report my findings  It's gonnaa be a couple of days though.


---------- Original Message ----------
From: Jeff Scarbrough <fishplate at gmail.com>
To: Matt <mbarre at juno.com>
Cc: shop-talk at autox.team.net
Subject: Re: [Shop-talk] Gas Pressure Washer problem
Date: Mon, 13 May 2024 11:05:44 -0400

My pressure washer is electric, but I assume the plumbing is similar.  If I take the wand off, water will flow through the machine and the pump.  I would first remove the tip, being careful to avoid any residual pressure.  Pull the trigger and see what comes out with the supply hose connected.  Then work your way back to the pump.
Also try removing the spark plug and see if it will turn over that way.
On Mon, May 13, 2024 at 9:51 AM Matt <mbarre at juno.com> wrote:
I cranked up the old pressure washer this weekend and it ran great, till it quit. It is an old Karcher G4000SH with low time, less than 50 hours on it. My wife was washing the deck, she put down the gun to reposition and when she went to resume it bogged down and quit. I was summoned to restart and find it is very hard to turn the motor over via the pull cord, I figure there is residual pressure on the pump so I pulled the trigger on the gun but nothing comes out.  Does this mean no residual pressure or is it a trigger failure?

I am stumped.  Any guidance or ideas?
TIA!
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