Sun Joe pressure washers are among the best-valued budget-friendly electric pressure washers on the market. But even those machines can have a failure. This blog post will help troubleshoot the most common issues with a Sun Joe pressure washer.
Sun Joe Pressure Washer Troubleshooting:
To troubleshoot your Sun Joe pressure washer, the first step is to identify the type of problem. Is the pressure washer not producing the correct pressure? Is the output pulsing high and low? Is there a motor or pump problem? Or is the pressure washer pump or another part of the machine leaking? Knowing the type of problem, you can use our diagnosis table to find the cause and solution.
This article will provide a complete guide to troubleshooting your Sun Jow pressure washer. It will give you information about the reasons that cause the electric pressure washer not to work correctly and provide solutions to these problems.
Contents
- 1 Diagnose and troubleshoot a Sun Joe Pressure Washer
- 2 Why is my Sun Joe pressure washer pulsating? Some useful tips
- 3 How do I fix my Sun Joe pressure washer? Some useful tips
Diagnose and troubleshoot a Sun Joe Pressure Washer
Use the following table to diagnose and troubleshoot a Sun Jow pressure washer:
Problem | Cause | Solution |
|---|---|---|
The suction tube or detergent bottle not connected properly | Hose with small diameter | Replace your hose with a 1″ (25mm) or 5/8″ (16mm) hose |
Restricted water supply to the washer | Check for the kinks and leaks in the hose | |
Inadequate water supply | Ensure the water source is unobstructed and fully turned on | |
Clogged intake filter | Remove the filter and rinse it with warm water | |
Air in the pump | Ensure that the hose and fittings are airtight. Shut off the washer and squeeze the trigger until water flows steadily from the spray tip | |
The suction tube or detergent bottle is not connected properly | Install the suction tube and detergent bottle correctly | |
Detergent too thick | Dilute the thick detergent by adding water | |
Obstructed spray tip | Remove the debris with a needle | |
No pressure tip on the wand | Install a suitable pressure tip at the end of the wand | |
If your model has a belt, it can be loose. | Tighten or replace the belt. |
Problem | Cause | Solution |
|---|---|---|
Plug the cord into a different outlet | The power switch is in the “OFF” or “0” state | Turn the power switch “ON” or “1” |
Cord not plugged | Plugin the power cord | |
Damaged, too long, or improper extension cord | Replace the existing cord with a 25′ (7.6m) 14 AWG cord or a 50′ (15m) 12 AWG cord | |
Inadequate power from the electrical outlet | Plug the cord in a different outlet | |
The pressure washer circuit breaker tripped | Wait for the washer to cool down and restart it | |
Noisy Pump | Air in the pump | Ensure that the hose and fittings are airtight. Shut off the washer and squeeze the trigger until water flows steadily from the spray tip |
Clogged inlet filter | Remove the filter and rinse it with warm water | |
Pump leaking water | Damaged or worn water seals | Replace the seals with new ones or call a professional |
Loose fittings | Ensure that all the fittings are tight |
Problem | Cause | Solution |
|---|---|---|
Leaks in the spray wand, spray tip, or extension | Damaged or broken O-rings or plastic insert | Replace the worn O-rings or call a professional |
Pressure washer pump dripping oil | Worn or damaged pump oil seals | Inspect the pump oil seals and replace if worn |
No water from the washer outlet | The water supply is off | Turn the water supply ON |
Kink in the hose or faucet | Remove any kinks and debris from the hose or water lines | |
Motor buzzes but fails to run | Loss in voltage due to the extension cord | Plug the unit directly into the outlet without an extension cord. If the problem isn’t solved, replace the extension cord |
Low supply voltage | Ensure that only the pressure washer runs on that circuit at the time of use | |
Residual pressure in the system | Shut off the washer and squeeze the trigger to release pressure | |
Residual friction among the internal components | Cut the water supply and turn the machine ON for 2 to 3 seconds. Try it a couple of times or until the motor starts. Don’t let the machine run dry for more than 3 seconds. | |
Unit not used for long periods | Call a professional |
Why is my Sun Joe pressure washer pulsating? Some useful tips
Generally, the most common reason for a Sun Joe pressure washer pulsating is a lower water supply, a kink in the hose, or a blockage in the inlet filter. Other reasons are air leakage or air trapped in the pump in the machine.
A worn-out or clogged nozzle, a problem with the unloader valve. Or another reason why less water is going through the machines than expected.
The following reasons will help to find the cause of your Sun Jow pressure washer pulsating:
One thing I wish more people knew about maintaining their Sun Joe Pressure Washer is the importance of using the right soap. It’s a small detail, but it can make a big difference in the machine's performance.
● Reason 1: Problem with the water supply, hose, or the inlet filter
The first reason to check if your Sun Joe pressure washer is pulsating is a restricted water flow. This can be a lower amount of water arriving at your pressure washer. Ensure the faucet is fully open and the hose running to the pressure washer is fine.
When you use a long hose, first try a short, thick one. Try to minimize the number of bends. The wider the hose, the more water will arrive.
Check and clean the inlet filter. Over time, dirt from your water supply will be collected there, lowering the amount of water going to the pump.
Next, check the high-pressure hose. Ensure that there are no kinks or leaks in the hose of your pressure washer.
Some leftovers can build up near the detergent tank and block some of the water if you use detergents. Check and clean the area. If it is hard to remove, use some distilled vinegar.
● Reason 2: Nozzle
Another reason for the pulsating pressure can be a worn-out nozzle. If you notice an unusual spray pattern, this signifies a worn-out nozzle. Nozzles can wear out after heavy usage, or small particles can partly clog it.
The easiest method to check this is using a replacement nozzle. If you do not have a matching replacement, use another type and see if this solves the pulsating problem. If the pulsating pressure is gone, the nozzle has a problem.
If it shows wear and tear, replace it. If the nozzle looks good, check for dirt in the nozzle. Clean it thoroughly using a nozzle cleaner or a thin metal wire.
● Reason 3: Pressure pump
If your Sun Joe pressure washer is still pulsating, the pump could be the reason. Sometimes, the air gets trapped in the pump, which causes the water pressure to pulsate. You can fix this problem by bleeding the pump.
First, disconnect the garden hose. Let the water run until you only see water and all the air has gone. Turn off the water, and connect the hose to the pressure washer. Disconnect the high-pressure hose.
Turn on the water source and go through the pump for half a minute. Turn off the water and connect the high-pressure hose. Try if this fixed the pulsating problem.
● Reason 4: Damaged unloader valve
If your electric pressure washer still produces pulsating pressure, you may have a problem with the unloader valve. The unloader valve diverts the water flow in the pressure washer, causing the water to flow back to the pump in a loop.
If the unloader valve is not working correctly, the pressure washer can result in the pulsation of the water pressure. To fix this problem, check the springs and seals of the unloader valve. Replace it if it is damaged, or try to readjust the unloader screw.
● Reason 4: Damaged unloader valve
If your electric pressure washer still produces pulsating pressure, you may have a problem with the unloader valve. The unloader valve diverts the water flow in the pressure washer, causing the water to flow back to the pump in a loop.
If the unloader valve is not working correctly, the pressure washer can result in the pulsation of the water pressure. To fix this problem, check the springs and seals of the unloader valve. Replace it if it is damaged, or try to readjust the unloader screw.
I recall a client who was about to replace their pressure washer because it wouldn’t start. But after a thorough cleaning and a new spark plug, the machine was as good as new. It’s a testament to the importance of regular maintenance.
● Reason 5: Water leaking from the pump
The pulsation in the outlet pressure of your Sun Joe pressure washer can also occur because of water leaking from the pump. There are two main reasons for this. The first is if the pump casing is not sealed correctly. The second is due to the activation of the thermal valve.
To seal the casing, ensure the seals are not broken or worn. Tighten the bolts off the pump assembly. If the water leakage is due to the activation of the thermal valve, turn off the washer and allow it to cool down for a few minutes before using it again.
How do I fix my Sun Joe pressure washer? Some useful tips
The first step in fixing a Sun Joe pressure washer is checking the fuse, power outlet, and power cable. The next step is to check the inlet filter, unloader valve, and capacitor for any damage or clogs.
An electric pressure washer contains fewer parts than a gas pressure washer. It requires a lot less maintenance, but it can still fail. Use the following steps to diagnose and fix the most common issues with a Sun Joe pressure washer:
● Step 1: Ensure that everything is dry
Ensure your hands are dehydrated before troubleshooting your Sun Joe electric pressure washer. Water and electricity do not match and are dangerous.
● Step 2: Check the cord and AC outlet
If your machine does nothing, the first step is to check the power cord for wear and tear. Make sure that all the connections look fine. Also, ensure the AC outlet provides enough voltage to operate the machine. Check it with another appliance, like a lamp. Also, check if the extension cable is fine if you use that.
If there is a problem, check the fuse in the house. It is also possible that the earth leakage circuit breaker has tripped because of moisture. Even when all is fine, checking another wall socket is always good.
● Step 3: Check the fuse
The next step is to remove the fuse from the pressure washer and check it. Use a multimeter to prevent it. Place the probes of the multimeter at each end of the fuse and use the resistance setting. Check what the multimeter shows.
A perfect fuse has approximately zero resistance. If you do not get a deficient number, the fuse is broken. You need to replace it with a new one.
● Step 4: Examine the capacitor
To check the motor capacitor, remove the case that covers the motor. Find the capacitor. A blacked capacitor indicates that it is burned. Disconnect the burned capacitor’s legs from the motor wires and install a new one. If you are unsure how to do this, ask a professional for help.
● Step 5: Check the water supply
Ensure that your water source can supply the needed pressure (PSI) and amount of water (GPM). If the pressure is not high enough, it can lead to air bubbles (cavitation). And cavitation can lead to pump damage. If the water source does not supply enough water, it can result in a pulsating pressure.
● Step 5: Check the water supply
Ensure that your water source can supply the needed pressure (PSI) and amount of water (GPM). If the pressure is not high enough, it can lead to air bubbles (cavitation). And cavitation can lead to pump damage. If the water source does not supply enough water, it can result in a pulsating pressure.
Check the minimum pressure for your Sun Joe model in the manual. I have to add that my experience is that a slightly lower pressure will still work fine. You can check the water pressure with a pressure gauge.
And the amount of water by filling a bucket with the hose. Measure the time it takes with a stopwatch. And use that to calculate the Gallons per Minute (GPM).
To a novice gardener using a Sun Joe Pressure Washer for the first time, I would say: start with a lower pressure setting, always aim the washer at a downward angle to avoid damage, and most importantly, take the time to perform regular maintenance. It’s the key to keeping your pressure washer running smoothly.
● Step 6: Check the unloader valve
If your Sun Joe electric pressure washer produces no pressure, you may have a problem with the unloader valve. The unloader valve diverts the water flow in the pressure washer to flow back in a loop to the pump when the trigger is not pressed.
If the unloader valve gets damaged, the pressure washer produces low pressure or no pressure at all in some cases. To fix this problem, check the springs and seals of the unloader valve and replace it if it’s damaged, or try to readjust the unloader screw.
● Step 7: Faulty Pump
Sometimes, electric pressure washers produce a pulsating pressure. This means that the pressure frequently changes between high and low. There can be a problem with the unloader valve. But if you have checked it, it is okay.
There can also be a problem with a damaged inlet, manifold, or pump valve that causes a pulsing pressure. To solve this problem, remove the pump from the washer and clean its components.
How can I know if the unloader valve of my pressure washer is faulty?
Hi Cheryl Ward, it seems like your unloader valve may be the culprit if your Sun Joe pressure washer is not working correctly. Check the springs and seals of the unloader valve and replace if needed. Hope this helps!
What are some common issues that can lead to a pulsating pressure in a Sun Joe pressure washer?
Hello Bertha, some common reasons for a pulsating pressure in a Sun Joe pressure washer include a lower water supply, nozzle issues, air in the pump, and a damaged unloader valve. Check these components for a solution.
Is it common for pressure washers to experience leaks in the spray wand or spray tip?
Yes, leaks in the spray wand or spray tip can happen due to damaged O-rings or plastic inserts. Replacing these parts or calling a professional can help resolve the issue.
Is it common for a pressure washer to have a faulty pump causing pulsating pressure?
Hi Ethel, a pulsating pressure in a pressure washer can be caused by a faulty pump, air in the pump, or a clogged inlet filter. Check these areas to troubleshoot the issue.
Why should I check the pressure tip on the wand of my pressure washer?
Hi Kelly, checking the pressure tip on the wand of your pressure washer ensures optimal performance and prevents potential issues. It’s a simple step to keep your machine running smoothly.
Why is it crucial to ensure the water supply has enough pressure and volume for a pressure washer?
Lisa, it’s crucial for a pressure washer to have adequate pressure and volume to function effectively. Insufficient water can lead to problems like pulsating pressure or leaks.
Can a clogged intake filter be a common issue with Sun Joe pressure washers?
A clogged intake filter can indeed be a common issue with Sun Joe pressure washers. To troubleshoot, try removing and rinsing the filter with warm water. Let me know if that helps!
What are some reasons for the Sun Joe pressure washer not working correctly?
Hi Lauren! A few reasons for the Sun Joe pressure washer not working correctly could be a clogged intake filter, inadequate water supply, or air in the pump. Check out our guide for troubleshooting tips!
How can I check the voltage supply of my Sun Joe pressure washer?
To check the voltage supply of your Sun Joe pressure washer, first plug it into a different outlet and ensure the power switch is on. Replace the cord if damaged.
Would using a pressure gauge help in checking the water supply for a pressure washer?
Using a pressure gauge can help identify issues with water supply for your pressure washer. Check the pressure and flow to ensure optimal performance.
Are there specific steps to follow when troubleshooting an electric pressure washer?
Hi Rita, yes, there are specific steps to follow when troubleshooting an electric pressure washer. Check out our article for a detailed guide on diagnosing and fixing common issues with Sun Joe pressure washers.
Why is it important to check the water supply and inlet filter of a pressure washer?
Hi Felecia, it’s essential to check the water supply and inlet filter of a pressure washer to ensure proper functionality and prevent damage. Regular maintenance is key.
Can a damaged or clogged nozzle affect the performance of a pressure washer?
Yes, a damaged or clogged nozzle can significantly affect the performance of a pressure washer. It can result in a pulsating water output and reduced pressure. Check the nozzle for any wear or blockages.
Why is my Sun Joe pressure washer pulsating?
Brooklyn Ford, your Sun Joe pressure washer may be pulsating due to a restricted water supply, nozzle issues, air trapped in the pump, or a damaged unloader valve. Check these areas for any problems.
Is it necessary to dilute thick detergent when using a pressure washer?
Diluting thick detergent with water is necessary when using a pressure washer, as it can cause issues. Check the instruction manual for specific guidelines on dilution ratios.
Are there any specific maintenance tips for Sun Joe pressure washers?
Hi Matthew, for specific maintenance tips for Sun Joe pressure washers, check our troubleshooting guide on the blog. It will help you identify and solve common issues with the machine. Hope this helps!
How can I diagnose and troubleshoot my Sun Joe pressure washer?
Hi Ted, to diagnose and troubleshoot your Sun Joe pressure washer, start by checking the water supply, the nozzle, and the pump for any issues. Use our guide to help you find the cause and solution.
Is it safe to troubleshoot a pressure washer if my hands are dry?
“Ensure hands are dry before troubleshooting. Safety first! Check water supply and pump if pressure issues. Use the guide for easy fixes. Happy cleaning!”
What is the best way to troubleshoot a Sun Joe pressure washer?
To troubleshoot your Sun Joe pressure washer, first identify the type of problem. Is the pressure washer not producing the correct pressure? Is the motor or pump malfunctioning? Check our blog for more details.
What can I do if my Sun Joe pressure washer is pulsating while in use?
Hi Leo! If your Sun Joe pressure washer is pulsating, check for kinks in the hose, a clogged inlet filter, or a worn-out nozzle. These issues could be the cause. Hope this helps!
What should I do if my pressure washer motor buzzes but fails to run?
Hi Cody, try plugging the unit directly into an outlet without an extension cord. If the issue persists, replace the extension cord. Hope this helps!