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Engine runs, but no water pressure. - Pressure Washers


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Repair Help & Product Troubleshooting for Pressure Washers

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I have a Briggs & Stratton gas power washer. This is the 1st time this year that I have used it. I put in fresh gas, hooked up the water supply. The engine started and then quickly stopped. I had to release the water pressure in the hose before I could pull start the engine. The only way to keep the engine running is to hold down the spray nozzle trigger. Once that is released the pressure in the hose builds up and the engine stops.


Sounds like the unloader is not working correctly. Try replacing it and see what happens. ... Briggs & Stratton Prosumer 20324 Gas Pressure Washer

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 running, looks a black plastic pressure relief valve starts blasting hot water. appreciate whatever insight you can give. Thx


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 pre ... Briggs & Stratton Pressure Washers

Troy-Bilt 2550 20293 pressure washer not producing pressure. Worked when last used 2 months ago. Pump pistons are moving up and down when engine is pulled through. Inlet water is flowing through pump but no pressure when engine is started. I have the same problem. Water flows thru the pump when not running, but no flow or goes in by-pass mode when I start the pump. The pump being Troy Bilt Model 020296-01. I replaced unloader valve even. Anything else I can do?


You replaced the unloaded valve. Are you positive you have the unloader screwed to pressure and not turned the opposite way? You will have no pressure if it is adjusted wrong. One other thing I have encountered is that the unloader has a ball bearing ... Pressure Washers

I have a Northstar pressure washer powered by a honda GC160 engine. The last time i used it, water leaks from the bottom of the unit, whether it is running or not. When running, the pressure is fine. I have felt underneath and it appears that the water is coming from the second opening from the rear. Is there a pressure relief valve there. I have a manual but cannot find any descriptors for underneath the motor.


This is a piston seal issue. You can get a kit to rebuild the pump. ... Comet AXD 3020 G Pressure Washer Pump

Husky HU80722 model Water flows thru the washer. Have disconnected all hoses, checked filter screen it is clear. Reconnected hoses, Engine runs fine home water pressure fows through washer. Still not producing any pressure.


... Northstar Pressure Washer 3000 PSI

Pressure washer exh2425 by devap, engine runs but i have no pressure just water from hydrant


It could be the valve(s) ... Devilbliss DeVILBISS Devap DVH2600 Gas-Powered Pressure Washer

Excell vr2500 pressure washer ,no pressure, took off high pressure hose at bottom of washer , get water flow, but flow does not change when engine is running full throttle


Check the water filter ---high pressurehose must have bbackpressure to develop pressure so disconecting it wont acheive ,much ,if you have agood water supply ,oil in the pump--- adjust pressure by srewing the brass fitting that the pressure hose atta ... Pressure Washers

I have a Husky 2600 2.3 pressure washer with a Honda motor that is only two years old. When I connect the hose and the sprayer I can shoot water through the sprayer no problem. The second I pull start the engine the water stops. Why would water only come through when the engine isn't running?


... Honda Pressure Washers

Hi I have a Troy-Bilt Pressure washer 2200 psi model 20292. I've used it only 4 or 5 times. It ran great for an hour today then it lost pressure. Seems like the pump is not working. The engine runs fine but no pressure. The water runs through the nozzel and I blew air in the lines to make sure there is no blockage and found no blockage even in the pump lines. Any ideas. Tom


... Briggs & Stratton Gas Pressure Washer 20244

Pressure washer engine running but no water being pumped


... Karcher G3025OH Pressure Washer

For pressure washer Model WP-2402-SWHB, SN 10132043: With Honda engine running, or no engine running, no water will pass through the pump.


Hi If no water is passing through your pump on mains water pressure and not sucking from a barrel then it will be either a blocked nozzle,blocked unloader on the side of the pump or a blocked water filter. ... Pressure Washers

I have a craftsman w/ honda model # 580752060 pressure washer. Started washing & after about 10 min. lost all pressure, no water comes from nozzle while engine runs. Cut off engine & nozzle sprays


You have a clog somewhere ... Craftsman 2600 PSI Honda Powered Pressure Washer

I have had 3 Karcher pressure washers all experience the same problem and so have two of my neighbors. Our area has very hard water and it causes problems with the washer not bringing up the pressure when the trigger is pulled (or surges up and down) and the nozzles clogging, etc. The service repair facilities cannot tell me how to prevent this. Many attempts to contact Karcher for advice have been ignored. I have been thinking that perhaps running the engine for a few seconds with no hoses a


If your water is that hard (and it appears it is) WD40 will NOT solve the problem. You should look into a water softener. However, chances are that a small, inexpensive model will not have the flow capacity required for a pressure washer. You'll like ... Karcher K2.26 Electric Power Washer

Troy Bilt pressure washer 2600psi. Engines running fine with supply line, wand, and pressure line hooked up but no water or pressure is coming from pump. pressure line is limp. What is the problem?


... Troy-Bilt Pressure Washers

I have a troybilt 3300 psi pressure washer with a gx390 honda engine. Replaced carb with new one . washer now will start and runs fine under load but let off water and carb goes up and down and backf


... Pressure Washers

Xr2600 excell pressure washer I was using it and it lost water pressure does not have any pressure. the engine runs fine just don't know what the problem is.


I have the same problem and it seems the piston in the back has a ring and the ring is broken i half i'm talking it to get fixed tomorrow i will keep you informed. ... Honda Pressure Washers

We have a Karcher G2500VH pressure washer. If you start the engine with the trigger pulled on the spray wand it will run at full pressure until you release the trigger. after that, when you pull the trigger it will not have any more pressure than the water hose feeding it. Does it have an internal unloader valve? What is the part number?


Hi, Karcher calls the unloader valve a spill valve, this is a link to a full drawing/parts listing , and your fault description might well be a sticking /seized unloader(spill ) valve hope this helps ... Karcher 2500 PSI Pressure Washer

Hi there, I have a Karcher 2650 pressure washer that only pulses, does not reach high pressure consistently. Engine is running fine, filter has been cleared out, water pressure is OK. I even took out the cylinder under the black cap & checked it for deposits and greased it, still no go.


This can be a problem with the pump unit. Actually the collector to be more precise. Also, the pump itself. Either may develop a hairline crack and allow pressure to seep out, and tells the pressure switch that it has lost pressure... so it comes bac ... Karcher Pressure Washers

Troy Bilt pressure washer model 020209 will not build pressure-have checked all screens and intake in pressure hose and garden hose from house to pump. water leaks at gun handle- took it apart and oiled piston- was ''grabby'' but now snappy but still leaks. Engine starts fine and runs fine. Please help.


A leaking gun will kill all the pressure. You may need to repair or replace the gun ... Briggs & Stratton Pressure Washers

I have a Husky HU80722 pressure washer 2600 PSI with a 160 CU IN engine. It runs great but when I pull the trigger the water does not come out under pressure. Please let me know what I need to do.


... Honda Pressure Washers

Engine runs fine. no water pressure. - Devilbliss DeVILBISS Devap DVH2600 Gas-Powered Pressure Washer


These pumps are notorious for seasonal problems. Tip the unit to the point you can pour engine oil into the water inlet connection. What your attempting to do is free up the ball seats in the pump. They get corroded when they sit and lock in pl ... Devilbliss DeVILBISS Devap DVH2600 Gas-Powered Pressure Washer

For Mi-T-M pressure washer Model WP-2402-SWHB: Honda engine runs fine, but only a trickle of water comes out of pressure line when trigger engaged.


... Pressure Washers

I just purchased a Simpson Megashot V3000 Pressure Washer and noticed the engine would stop running every time I released the wand trigger. Also, water was constantly spraying out of a valve underneath the unit - I assume it's some type of pressure release valve but there is no mention of it in the owners manual. I am thinking about returning it to Costco for a refund.


... Simpson Pressure Washers

When pressure washer engine is running and hooked to water supply, there is no water spray with trigger is depressed


Hi Have you checked that your nozzle in the lance end is not blocked. Please try this and then try without the high pressure hose attached. ... Karcher 2500 PSI Pressure Washer

Engine runs, but no water pressure. - Pressure Washers


... Pressure Washers
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