Have you ever considered purchasing a GreenWorks 1600 pressure washer? Have you encountered any issues after purchasing? If so, you’re not alone. GreenWorks is a famous brand that promises a lot—but does it deliver a good service? You may have had one or more of the common problems that other model owners have discussed.

One of the common GreenWorks 1600 pressure washer problems is that the pressure washer leaks water from the pump. Various factors can cause this, to know more, read the full article.

GreenWorks 1600 Pressure Washer Problems

As said, there are a few potential problems you should be aware of. Use the following table as a guide to pinpoint the origins of various issues.

Most owners said on the online forum FIxya that the problems were caused by a worn-out seal or O-ring, a broken pump, a wrong assembly, and so on.

Let’s get to know in the table below which kinds of problems you may face in the future and their probable reasons.

Problems That May AriseLikely Reasons
Leaks water from the pump.A worn-out seal or O-ring, a damaged pump, or an incorrect assembly
Does not generate enough pressure.Clogged nozzle, an incorrect setting on the pressure regulator, or a faulty pump
The motor stops and starts intermittently.Problem with the pressure thermal relief valve or the unloader valve
The pressure washer won’t start.Problem with the spark plug
Making strange noisesLoose connection or mineral build-up in the pump
The pressure washer is surging.A fuel mixture issue, a spark plug issue, or a clogged air filter

We’ll talk about each problem in detail so you can understand it better and find a quick fix.

The Pump Leaks Water

The GreenWorks 1600 Pressure Washer is a popular choice for those looking for a reliable and robust machine. However, some users have reported that their GreenWorks 1600 psi pressure washer leaking water from the pump.

This can be caused by a worn-out seal or O-ring, a damaged pump, incorrect assembly, etc.

1. Worn-out Seal Or O-ring

If you have a GreenWorks 1600 psi pressure washer, you may have noticed that it leaks water from the pump. Most likely, an old seal or O-ring is to blame for this.

To replace the seal or O-ring and stop the leak, you will need a Phillips screwdriver, flathead screwdriver, adjustable wrench, 1/4 inch socket, ratchet, and Teflon tape.

To learn how you will be able to fix the issue, you can watch this video:

Using these tools, you can replace the sealed O-ring. The procedure is:

Step 1: Disconnect the pressure washer. After that, take the screws out of the pump cover using a Phillips screwdriver. Also, use a flathead screwdriver to remove the O-ring from the pump.

Step 2: Remove the old seal or O-ring. Clean the surface of the pump. Install the new seal or O-ring.

Step 3: Assemble the pump again.

Once you have replaced the seal or O-ring, your GreenWorks 1600 should no longer leak water from the pump.

2. Damaged Pump

Damage to the pump is the most likely reason for the pump leaking water. You’ll have to get a new pump if the one you have gets damaged. You can follow the steps below to return.

Step 1: Unplug the power source of the pressure washer.

Step 2: Drain the pump by disconnecting the hose from the pump and releasing the pressure from the pump.

Step 3: Remove the bolts that secure the pump to the pressure washer. Also, remove the old pump from the pressure washer and install the new pump.

Step 4: Reattach the hose to the new pump and refill the pump with water.

Step 5: Reconnect and turn on the pressure washer. Verify that the pressure washer is in good operating order by doing a test run.

3. Incorrect Assembly

If your GreenWorks 1600 psi pressure washer leaking, then the reason may be incorrect assembly. The good news is that this is an issue with a simple solution. Take the pressure washer apart and put it back together in accordance with the manual’s directions. If you have a GreenWorks 1600 psi electric pressure washer leaking, it is most likely due to incorrect assembly.

Step 1: After disassembling the pressure washer according to the instructions in the manual, inspect the pump for any damage or debris.

Step 2: Clean the pump and all components around it.

Step 3: Reassemble the pressure washer by following the instructions in the manual.

Step 4: Check to see if the pressure washer is still dripping water.

If you follow these steps carefully, you’ll likely be able to get your pressure washer to work normally again.

Does Not Generate Enough Pressure

Some people who have used the machine have said that it doesn’t generate enough pressure to be effective.

This may be due to the design of the pump or the quality of the materials used. Also, faulty pump, a clogged nozzle, and an incorrect setting on the pressure regulator.

If you are experiencing this issue, there are a few things you can do to try and remedy the situation.

1. Clogged Nozzle

GreenWorks 1600 Pressure washers are particularly susceptible to this issue, as the nozzles can become blocked with dirt and debris over time.

To clean your nozzle, remove it from the pressure washer and use a small brush to clean out any blockages. If your nozzle is seriously broken or worn out, you should probably get a new one. If you still can’t get enough pressure, you can ask a GreenWorks customer service representative for help.

2. An Incorrect Setting On The Pressure Regulator

Some people who have used the machine have said that the pressure it puts out is not enough to clean their surfaces well. Several potential explanations exist:

If you are having this problem, check the pressure regulator to make sure it is set to the right pressure. You should also check the jet tips and hose for any obstructions. Don’t be afraid to contact GreenWorks’ customer service if the problem keeps happening. Besides that, they announced a notice for it.

They would like to remind their customers that the pressure regulator must be set to the correct psi for the pressure washer to work correctly. If this is happening, check your pressure regulator and make sure it is set to the right psi.

3. Faulty Pump

To troubleshoot it, replace the pump. You can purchase a replacement pump from GreenWorks or a third-party retailer. When you finally get your hands on the replacement pump, just plug it in and let the user manual guide you from there.

The Motor Stops And Starts Intermittently

You may have noticed that the GreenWorks 1600 psi pressure washer not working; it stops and starts intermittently. This is a regular issue with this model and has several potential causes.

1. Problem With The Pressure Thermal Relief Valve Or The Unloader Valve

One of the most common causes of this problem is the pressure washer’s unloader valve is stuck in the “On” position. This makes the motor get too hot and stop working.

To fix this, turn the unloader valve to the “off” position and restart the pressure washer.

2. Problem With The Unloader Valve

Another possible cause is that the pressure washer’s thermal relief valve is not functioning correctly. This valve is designed to release pressure and prevent the pump from overheating.

If the valve is stuck in the “Open” position, it will not release pressure properly, and the motor will overheat. To fix this, replace the thermal relief valve with a new one.

The Pressure Washer Won’t Start

If your GreenWorks 1600 psi pressure washer motor not starting, the most likely reason is a faulty spark plug. This can be caused by several things, such as a build-up of dirt and debris around the plug or a problem with the machine’s ignition system.

Fortunately, troubleshooting a spark plug issue is relatively simple. The spark plug must be free of debris before you start the engine. If it’s unclean, wash it or change it. Next, check the machine’s ignition system to see if it works properly.

Making Strange Noises

If your GreenWorks 1600 pressure washer is not working so well, or during starting, it is making strange noises, it could be due to a loose connection or mineral build-up in the pump.

First, check the power cord and all connections to the pump for any loose wires to fix loose connections. If you locate any, use a wrench to adjust them. If the issue persists, a new pump may be required. First, remove debris from the intake screen to clean the pump with mineral buildup. Then, using a garden hose, flush the pump with clean water. If the problem keeps happening, it may be necessary to replace the pump.

The Pressure Washer Is Surging

You may experience GreenWorks 1600 pressure washer surging problems. A blocked air filter, improper fuel mixture, or a faulty spark plug are all possible reasons. If you’re experiencing this problem, it’s best to take a closer look at each of these possible causes to see if you can narrow down the source of the issue.

1. Fuel Mixture Issues

Over time, the fuel in the pressure washer’s tank can become stale and start to break down. The engine may buck and the pressure washer may surge if this happens.

If you are having fuel mixture issues, the best action is to empty the tank and refill it with fresh fuel. You may also need to change the fuel filter. If the problem keeps happening, you might have to take the pressure washer to a mechanic to figure out what’s wrong.

2. Spark Plug Issues

The engine may not start because the spark plugs are dirty or broken. You can clean or replace the spark plugs to fix the issue.

3. Clogged Air Filter

This can happen if you use your pressure washer in dusty or dirty conditions. To clean your air filter, remove it from the pressure washer and rinse it off with water. If it’s clogged up, you might have to replace it.

GreenWorks says that the problem can be fixed by taking out the air filter and washing it with soapy water.

Frequently Asked Questions (FAQs)

Why is my GreenWorks pressure washer pulsing?

There are a few things that could be causing your GreenWorks pressure washer to pulse. It could be because of a problem with the pump, the pressure relief valve, or the unloader valve. Another possible cause is a malfunctioning hose or wand. If you’re not sure what’s causing the pulsing, we recommend taking your pressure washer to a qualified technician for service.

Why is my pressure washer revving up and down?

If your GreenWorks pressure washer is revving up and down, it could be due to a variety of reasons. It could be that the pump is not primed properly, the engine is low on oil, or the pressure washer is overloaded. If you are having this issue, it is best to consult the owner’s manual for your specific model. But if you can’t find a solution in the manual, you may need to call customer service or a qualified technician.


The GreenWorks 1600 pressure washer is a great tool for anyone who wants to do some serious cleaning. You may think you have made a significant investment when you purchase it. However, a few common problems have been reported by owners of this pressure washer.

No worries! We tried our best to look at this issue around the web, with users complaining about GreenWorks 1600 pressure washer problems. It’s a great option for people who want a reliable and inexpensive pressure washer. So, if you are considering purchasing one, hope this article has helped identify some of the common problems with the GreenWorks 1600 pressure washer.

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