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The pressure will build and slowly go dowe.the

The pressure will build and slowly go down.the trigger can be released& it will do the same again the pressure will be good and slowly go down again. if you leave the trigger off too long the motor will die out.

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Clean out the nozzle.

Posted on Sep 10, 2009

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Power boss pressure washer stops when trigger is released


The unloader on yoru pump is bad.. Pressure washer parts catalog quick links Pressure Washers High Pressure... go here with your model number on your pump and they can guide you to your new unloader. Good luck

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Hello i have a 6 hp briggs pressure washer and it starts fine and runs for 30 seconds and shuts off. it feels like the motor gets stuck when i try to start it again, but after a half hr or so it will turn...


You have to make sure you are pressing the trigger while you start the pressure washer. You should also make sure you are releasing the pressure at least every 30 seconds or the pressure will build in the pump and the engine can stall.

If it stalls with pressure in the pump and you don't relieve it by pressing the trigger, it will be very difficult to start. The pressure will slowly bleed off over time, which sounds like what you are seeing.

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I have a Mi T M job pro 3500psi pressure washer that may have a clog in the nozzle, how do I release the pressure in the line? All the pressure fittings are stuck (probably from the pressure in the line),...


If the engine is off, try unscrewing the hose at the pump. Put on a thick pair of gloves and start to unscrew slowly till you feel some preasure escaping. It should release quickly. You can use a piece of wire brush wire to unplug the nozzle. Wear safety glasses while performing this task, and expect it to happen again. Good Luck Friend.

Feb 07, 2018 | Mi T M WP-2700-4MHB Pressure Washer

1 Answer

Nissan 1400 champ front brakes binding, brake paddle stays high.


This indicates that you have air in the brake system or something isn't mounted properly. You'll need to inspect to see if there is anything not properly mounted, I'll deal with the brake bleeding:

You will need to bleed the brakes from the right rear first, then the left rear, right front, then left front brake, all without letting the brake Master Cylinder resivoir from getting low while doing the bleeding.

You may even want to start with the master cylinder to make sure it's bled properly by loosening the lines there first, bleeding them & then continuing to the system. Use the guide below for best results.

Bleeding brakes properly:
1. 2 people are required to do this properly, forget one man bleeders, they do work, but don't talk back or identify problems as they can't see what's happening. As a safety feature it's good to have another person nearby when someone is getting underneath a vehicle. Even my wife has had to do the pedal pushing in my household when I didn't have an assistant and needed to bleed either a brake system, or a clutch system.

2. Never let the fluid go beneath half way down when bleeding the brakes.

3. When adding fluid to the master cylinder, use a funnel to allow the fluid to run down the side into the cylinder, or use a syringe to prevent air from entering the fluid as you pour it.

4. Always pump the brakes slowly, release them slowly. Fast pedal action causes the fluid to rise into the air, allowing air to enter the system.

5. Pressurize the system by pumping repeatedly until the pedal is as firm as it will get, continue to hold that pedal down until the person bleeding the brakes, has released the air by loosening the bleeder valve, then make sure the line is tightened BEFORE releasing the brake pedal slowly. Pump the pedal again to build pressure, & bleed the brake again the same way until air stops coming out & only good fluid is seen. Proceed to the next farthest line.

If done this way, the brakes will be properly bled and if there are no leaks, the system should work properly. If you identify a leak, repair and start over.

good luck

Dec 27, 2009 | 1997 Nissan Pickup

1 Answer

Loud repeating noise until the water trigger is pressed


Check the pressure washer for leaks. That sound is probably the unloader valve recycling as the machine slowly looses pressure and needs to build it up again to max pressure.

Dec 15, 2009 | Garden

1 Answer

Pressure is fine when first started ,if trigger released no Psi


Your uplift injector valve in the water pump is sticking. You need to remove this part. Lube the top o-ring only with a water proof grease. Reinstall this part. You will be up and running again.

You need to use needle nose vise grip tool to easily remove the valve. You need to grind down the vise grip tool to fit the opening where the valve is installed.

To prevent this problem from reoccuring use a pump guard additive.

Apr 05, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Karcher 2400 psi blaster When you release the trigger it will not pick up pressure when you use it again


To determine if your problem is due to an easily replaceable part, follow these steps:

1. Connect the water supply hose, the pressure hose, and the wand WITHOUT any nozzle tip.

2. Turn on the water supply, and press the trigger until water is smoothly running out of the nozzle
after any air is all purged out. Release the nozzle trigger.

3. Start the engine, and let it warm up for about 30 seconds.

4. With the engine running smoothly, press the nozzle trigger. The water should flow out of the nozzle (without the tip installed) at a faster rate, while the engine noticeably loads down as it used to do before your "no pressure" problem. If it does not load down, turn it OFF, and disconnect everything, and contact a Karcher repair facility.

5. If the engine does load down, release the trigger, and install one of the nozzle tips (not the black one).

6. Press the trigger, and the engine should load down, and you should have normal pressure from the wand. After you release the trigger and press it again, you will probably again have no pressure, and the engine will not load down. Removing the nozzle tip, pressing & releasing the trigger, and re-installing the tip should give you normal pressure again, but releasing the trigger will cause no pressure until you again remove the tip, press the trigger, and re-install the tip.

This is caused by a bad UNLOADER VALVE, which is located under a black cap with a metal button on it located on the top front of the pump. I don't know if you can purchase the replaceable parts from a Karcher repair shop, but when a neighbor & I took his washer to a repair place, it looked pretty simple to do this repair, and he was charged about $60 to replace a $5 (maybe) part, and it took about 5 minutes.

Sep 12, 2008 | Karcher 2500 PSI Pressure Washer

1 Answer

There is no pressure


To determine if your problem is due to an easily replaceable part, follow these steps:

1. Connect the water supply hose, the pressure hose, and the wand WITHOUT any nozzle tip.

2. Turn on the water supply, and press the trigger until water is smoothly running out of the nozzle
after any air is all purged out. Release the nozzle trigger.

3. Start the engine, and let it warm up for about 30 seconds.

4. With the engine running smoothly, press the nozzle trigger. The water should flow out of the nozzle (without the tip installed) at a faster rate, while the engine noticeably loads down as it used to do before your "no pressure" problem. If it does not load down, turn it OFF, and disconnect everything, and contact a Karcher repair facility.

5. If the engine does load down, release the trigger, and install one of the nozzle tips (not the black one).

6. Press the trigger, and the engine should load down, and you should have normal pressure from the wand. After you release the trigger and press it again, you will probably again have no pressure, and the engine will not load down. Removing the nozzle tip, pressing & releasing the trigger, and re-installing the tip should give you normal pressure again, but releasing the trigger will cause no pressure until you again remove the tip, press the trigger, and re-install the tip.

This is caused by a bad UNLOADER VALVE, which is located under a black cap with a metal button on it located on the top front of the pump. I don't know if you can purchase the replaceable parts from a Karcher repair shop, but when a neighbor & I took his washer to a repair place, it looked pretty simple to do this repair, and he was charged about $60 to replace about a $5 (maybe) part, and it took about 5 minutes.



Sep 11, 2008 | Karcher 2500 PSI Pressure Washer

3 Answers

Powermate pressure washer Model PW0872400


pressure washers has this pressure switches where in as you press on the trigger, the washer works and if you release it, the pressure would build up high and it would trip this switch to turn off the motor or deflect the water to the by pass hose ( if the motor is not stopping) then as you press again the trigger, water should come out of the gun again but would not,

i have encountered the problem is in the pressure switch, even the pressure went down, sometimes it wont close the contact then the motor wont run ,

if the motor is continously running, then the trigger switch is the problem, the pressure excerted on the switch is so high that even if you press it , it won't open up to release the water.

what i can suggest is to tie the trigger in the gun so that it is always pressed and then just unplug the unit if you want to stop using it. it is an inconvenience but it will work.

or, open the gun and see if you can figure out why pressing the trigger would not open the switch.

another option is you can lower the pressure of the washer if it has an adjustable pessure controller. by lowering the pressure might open the switch when ever you press the trigger.

i hopw i was able to fix...

good luck,

drcool

Aug 21, 2008 | Coleman (100076) Compact Refrigerator

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