I attached a replacement hose & gun (from mfgr) attached the lance to the gun and the washer worked for about 2 minutes, then the spray stopped. When the trigger is pulled, a short spray along with a pump rev is all I get. Cleaned the tip. Water runs through the gun without the lance connected. Any ideas?

When the power washer does not turn on, it is either due to no water flow or no electricity going to the power washer. In other words, either a water or electrical problem.
check water flow issue like this

1. The high pressure hose, spray gun and lance must be connected to the power washer.
2. The garden hose must be connected to the power washer using the garden hose adapter.
3. Turn the water completely on at the water faucet.
4. The power cord should not be plugged in.
5. Squeeze the trigger on the spray gun.
6. If there is water flow through the spray gun and lance shooting 10 - 25 feet, this confirms water flow is NOT the problem for the power washer not turning on.
7. If there is no water flow, perform the following troubleshooting procedures:
   a. Remove the lance, squeeze the trigger. If water flows, the lance is blocked. Use cleaning wire to clean the nozzle tip and try again.
   b. If no water flows with lance removed, turn the water off. Remove the spray gun from the high pressure hose. Turn the water on, if water flows, the gun is the problem. Reattach the gun, turn the water on and squeeze the trigger. Sometimes this unblocks the gun. If not, replace the spray gun.
   c. If no water flow with the gun removed, remove the high pressure hose, turn the water on to make sure there is no blockage in the hose. This is very unlikely but we need to make sure.
   d. If no water flows out of the water outlet, the quick connect garden hose adapter is problem. See Garden Hose Adapter troubleshooting.
8. For electrical solution check
9. The power switch was not turned on. Find the power switch and make sure the "-"side of the rocker switch is pushed down. "O" = Off and "¾" = On.
10. Next, make sure the power cord is plugged directly into an outlet and NOT into an extension cord. The directions do say not to use an extension cord.
11. Each time the power cord is plugged in to an outlet, the Reset button on the GFCI module must be pressed down to connect to electricity.
12. Check to see if the Reset button has been pressed.
13. Next, confirm the small plastic window below the Reset button shows RED in the window. The RED color is not a light but a RED screen that slides into the window when the Reset button is pressed down. Because it is not a light, it can be hard to see in low light. If you are unsure, press the TEST button down. If the GFCI was set and RED was in the window, you will hear and feel a "click."
14. The RED color must stay in the window once the button is released. This confirms there is electricity going to the power washer.
15. If the RED color goes away when the Reset button is released, there is NO electricity going to the unit. Try another outlet until the RED stays in the window.
16. Now if the unit turns ON for a second or two with the Reset button pressed and the power switched on, it is working as it should. All that is left to do at this point is to squeeze the trigger on the spray gun and the power washer will turn on. When the trigger is released, the power washer will turn off. This is due to the Total Stop System (TSS) that only turns the unit on when water is flowing through the power washer. When the trigger is released, water flow stops which the TSS sensed and immediately shuts the unit off. a) So to review, if the Reset button has been pressed and is holding and the power switch is ON, the power washer is supposed to start up for a second or two and immediately shut off. At this point all you need to do is squeeze the trigger; the unit will turn on.

First you have to do is try the machine without load. Attach everything as usual but do not attach the lance. Put on machine with water supply already on. If you close the gun the machine should stop. If you open the gun ( always with out lance)....the machine should start sending the water a bit far. If this is OK....then you have a lnance with a faulty, blocked NOZZEL.
NOrmally the machine stops when gun is released because there is a valve (Spill Valve) that actuates a electrical micro switch. This in turn closes off te elecreic supply...stopping the machine.
If with out lance your problem is still there....then the spill valve is faulty. AS I first said you must be sure that the nozzel is OK, so that you can blame the Spill Valve.
I raely service Spill Valves (Control Valves). I change with a new one. When open the cover using a TORX T15 screw driver....you locate the spill valve where there are 2 wires coming out. Some machines have the spill valve incorporated with the head and the intake and delivery valves unit. This I advize to change with new parts. These all in one heads are very good because at one go you change the spill valve and the other valves in one go.
Therefore in a few words you either have a blocked nozzel...or you have the spill valve faulty.
Also the delivery valves could be blocked...thus creating pressure inside and activating the spill valve to close off the electricity. You can also try to start the machine without gun and hose attached...but always with water being fed. NEVER put on a power washer without water being fed. And never store a power Washwer withpressure in it.
Fulltech.

Dear Sir,
Normally when one closes the gun the machine stops. So you may have a blockage problem that is shutting the machine off. You may try to diusconnect the gun so that you run the machine without load. But..ALWAYS...with water being fed. Never run a power washer without water being fed. Without gun and water fed normally....your machine should continue working. If so you can attach the gun without the lance. If it works, you have a blocked nozzle in the lance. If so try with a very thin needle to clear the nozzel. Do not make the nozzel's hole bigger with cleaning, because then you lose power. Now these machines stop automatically by means of a control valve (Spill Valve). The spill valve when the gun is closed, pressure is created and the spill valve in turn will move to close the electricity by means of a micro switch. Spill valves give a lot of trouble if machine is left with soap in it, or if the machine is stored with pressure in it. NEVER STORE A POWER WASHER WITH PRESSURE IN IT.....always when finished working disconnect electricity, disconnect water and finally press the gun to release pressure. Well as I already said start by putting on machine without load. Then add the gun without lance so that you see that when you close the gun the machine stops....and when you open the gun machine starts again. All this without lance attached. Also in cases like these the Spill Valve sometimes gets jammed in the cutting off electricity position. Spill valves only need to be serviced with good silicon grease....but in doubt change the spill valve. If you open the machine the spill valve is located where you see 2 wires coming out. You should have special tools to remove and service/change the spill valve. Well hope you have a small idea from where to start.

HI it sounds like you may just have a blocked jet on the end of your lance. Please remove and clean.

hey there...

If the lance and hose have been sitting for an extended period of time, they may have rusted inside, and are likely to cause issues when they are put back in service. Usually best to replace the expendables like hoses and guns if they have gunked up. 1300 psi is not much, but with a restricted lance nipple, you're getting 700psi...

hi try statring the machine with no hose on, if ok add the hose to the machine without the gun and lance. then try the gun on its own WITHOUT THE NOZZEL in the lance. just elimate things regards

The reason it stops spraying might be a clogged gun, hose or nozzle-tip.
The reason for pressure buildup killing the engine might be a stuck unloader valve in the pump.

While you are checking each component of the "output" side, spray some penetrating lube into the "input" side of the pump (where the garden hose connects) and let it be working on the unloader valve.

Fix the spraying problem first:
Start at the nozzle and verify that it is open by using low-pressure air. Clean or replace as needed. Next check the hose (with nozzle and gun unhooked) and finally the gun/trigger mechanism.
All must be clear and open to perform correctly.

Next, pour a few ounces of power steering fluid (or similarly LIGHT oil) into the garden hose, attach it to the pump and turn on the water supply.

Leave the "output" hose, gun, etc. UNHOOKED and point the output port of the pump (where the high-pressure hose connects) towards a vacant, safe area.
Startup the engine and allow the oil in the garden hose to work its way thru. (About 1 -3 minutes of run-time.) Shut it down and attach the high-pressure hose.
Hope this solves the problem!

Dear sdadean,
I am assuming that when you said "wand" you mean the "gun". Myself I rarely service guns. But there are types that are serviceable and others that are not. If the brass elbow had 2 stainless steel pins....then this is a gun that you must replace with a new one. And putting oil, is the worst enemy....because oil damages O rings. Now the high pressure hose is fitted inside the brass part by being sealed by a black O ring and a white backing flat O ring. I do not know if these that you saw. Now if the brass has only one pin coming out from the back, this type of gun can be serviceable. Look at the brass at the place where the lance is attached. If you see a hexagon hole, this is a plug that can be unscrewed with an allen key. Behind the plug there is a ceramic seating. Then you find the valve and a spring. If the steel valve and the ceramic seating are damaged, the whole gun must be replaced.
To tell you the truth I usually change the gun and fit a new one, when the machine keeps on going because the gun does not close. I find it the best and the most safe way of solving the problem.
Regards,
Fulltech.

Go to this web site for a PDF owners manual for your pressure washer.


http://www.karcherresidential.com/support/downloads/pdfs/usermanuals/5962-0870.pdf