Question about Karcher 2500 PSI Pressure Washer

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Pressure washer when i trigger the pressure hose the machine shuts off.

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Call kartcher

Posted on Nov 05, 2008

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Why does the motor run when I do not pull the trigger of the gun after the high pressure washer is turned on? The motor is supposed to run only if the trigger of the gun is pulled and shuts off when the...


When water is running through system, the motor has to run to keep the pressure built up. So, if the water is leaking out, the motor think it needs to keep running to keep the pressure built up. The leak needs to be fixed to the motor will not run constantly.

Jun 16, 2014 | Karcher PSI Electric Pressure Washer

1 Answer

I have a honda 2600 pressure washer. After running fine for a couple of seconds the water will stop flowing out the tip. It is receiving water,but will not flow it to the pressure hose. I even disconnected...


This happens when air gets inside the hose. An air bubble of sorts is in the hose and will not build pressure until you blow the air out of the line. Start the pressure washer, turn on the water. pull the trigger on the gun. It will spitter and spatter and come to a trickle. release the trigger on the wand. Pull the trigger again and it will eventually work it self out.

Jun 13, 2011 | Honda Black Max 2600 PSI Pressure Washer

2 Answers

I bought a honda pressure washer power boss 3000. I load the gasoline, start the machine, but pressure water is not coming out from the trigger. i tried so many things , but can t get started.


If you are using a water tank for water supply, remove the water supply line from the pressure washer and connect a water hose from a faucet. Turn the water on, then crank the engine. Pull the trigger of the spray gun until water comes out. When then water starts to spray properly the release the trigger, shut engine down with pressure on the line then reconnect the water supply from the tank to the pressure washer. If this fixes the problem then the problem was "air-locked"! Happens alot with new pressure washers that have never been run. If you need any other help, please email me @ davidandlisacampbell@yahoo.com

Feb 18, 2011 | Honda Pressure Washer PSI 3000

1 Answer

I have a gasoline pressure washer. i connect machine the right way. try to start but machine only runs when trigger is pressed. stop pressing trigger machine shuts off. the water is flowing through the...


Not knowing exactly what type of pressure washer you have, most are equipped with an "unloader valve" so the pressure bypasses. If this is malfunctioning, the pressure will build up and bog the engine down.

Feb 11, 2011 | Garden

1 Answer

Engine runs , not getting any water flow when trigger pressed.


Disconnect hoses.
Look for kink in water hose.
Check incoming water connection for filter washer
Replace filter washer
If you don't have a filter washer, put one in.
Hook up water, and turn on
Water should come out other side of pump.
Turn on machine.
Do you get pressured water out of pump.
If no pressure, then pump is suspect
Hook up washer hose without gun
Does pressure come out of washer hose
Finally, the gun trigger may be bad.

We had to buy guns now and then.
Search for pressure washer guns
Following link shows guns we used:
http://www.ultimatewasher.com/pressure-washer-trigger-guns.htm

Oct 25, 2010 | Karcher G2650HHR Gas Pressure Washer

1 Answer

Karcher pressure washer hunts ~ off/on ~ when running. How do I fix?


HI Your machine wil start and stop if you have any external leaks when the machine is running at not pressing the trigger. Please start the machine and not pull the trigger and look form leaks. A common one is around the high pressure hose outlet and also the trigger.

Jun 11, 2010 | Karcher 1750 psi Electric Pressure Washer

1 Answer

Ex-Cell VR2500 Builds Pressure but Won't Spray


I have a similar problem and diagnosed it to be a problem with the gun. I spoke to a technician that services this pressure washer and he walked me through all the diagnostic steps. The pump is working because there is pressure being built up and the gun sort of works because you can get water out before the washer is started. The technician said that the mechanism inside the gun is either clogged or broken. I am going to Home Depot or Lowes to purchase a new gun and will try it tonight. Guns are only about $30-40. He said generic is fine as long as the thread matches and PSI is in range. Good luck!

Aug 09, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

No pressure


It is probably air locked....Here's what you need to do. Connect the garden hose, and HP hose, but not the gun. Turn on the water, and let it run while you make sure that there are no high points in the garden hose that can trap air....Work the hose so that any air is displaced through the pressure washer. Continue in this manner through the HP hose. Shut off the water and connect the gun. Turn the hose back on, and operate the gun for several minutes, pulling the trigger and releasing. This alternately allows the water pressure to build up on house pressure and then to depressure, pulling residual air from the system. Release the trigger, and start the machine. Usually, this is enough to get full washing pressure. If it is very difficult to start, you can hold the trigger down on the gun and pull the start cord at the same time. Holding the trigger down acts as an unloader, making the starting easier.
Hope that this helps, --W/D-- please feel free to rate this solution! Thanx!

Jul 31, 2009 | Garden

1 Answer

2-yr old troy-bilt pressure washer with honda gcv160 engine. seems to run well, but when trigger is pulled get full pressure for less than 5 seconds before reducing to house water pressure. when left...


It sounds like an air lock. Try this: With the machine off, connect the hose to the washer and let it run for several minutes to get all of the air out of the hose, and to purge any air out of the pump. Shut off the water, and connect the high pressure hose, but not the gun. Let the water run for several minutes. stretch out the HP hose and make sure that the air is displaced. Shut off the water, connect the gun, and purge as before. Now crank it washer up. As quickly as safe to do so, open the trigger to keep water moving through the washer. It should come up on pressure very quickly. It is better during normal operation to keep water moving through the system. When I am through for a while, I shut down my washer, but leave the trigger depressed to allow the pump to stay full of water, and cool. This prevents further problems when I restart it.
Hope this was useful.

Regards --W/D--

Jul 17, 2009 | Briggs & Stratton Garden

1 Answer

No pressure in the pressure washer


Leaving the hose on shouldn't cause a problem so don't panic. It sounds like you could just have a dirty nozzle. Try sticking a pin or something in the end of the nozzle (machine not running) and giving it a clear out. also if it is a two peice gun, split it and tap the squirting part on something clean like a workbench to clear any debris that might have got in there.

Oct 28, 2008 | Karcher 2500 PSI Pressure Washer

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