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Campbell Pressure Washer Problems: Pump & Water Troubleshooting With Fixes

Campbell Hausfeld is a reputed power tool manufacturer that also produces gas and electric pressure washers. Most people accustomed to using pressure washers sometimes experience inconsistencies in water pressure (being too high or low). Moreover, water leakages are often a source of bother for many. Let’s look at some ways in which you can troubleshoot these problems all by yourself.

Campbell Pressure Washer Problems:

If water is leaking from your Campbell pressure washer, the problem could be with the pump, the input hose, the high-pressure hose, or the spray gun. Make sure all the connections and seals are tight and in good shape. If there are considerable fluctuations in water pressure (being too low or too high), check the nozzles and make sure the unloader valve is set right. Ensure that the pump is regularly oiled and inspect its seals for damage if it produces an unwanted sound or leaks oil.

This post discusses all the likely problems related to the hoses and the pumps in Campbell pressure washers. If you want to learn how to diagnose and fix your pressure washer, make sure you continue reading this article.

Campbell Pressure Washer is Leaking Water

If a Campbell pressure washer leaks water, check the hose connections at the pump input, spray gun, and pump itself. Check if any of these points have developed a leakage.

A leakage is more likely to occur at one of these three locations. If the intake hose’s seal is weakened, water may leak. The connection between the high-pressure line from the pump and the spray gun is also prone to leaking. In addition, if the pump’s seals are compromised, water may escape and cause a leak.

● Campbell Pressure Washer: Water Leaking from the Pump

If your Campbell pressure washer leaks straight from the pump, the piston seals are damaged and need replacement.

Most pressure washer pumps to push the water through the hoses using a piston mechanism with positive displacement. A piston seal inhibits water entry and exit from the pump. These seals ultimately degrade and can lead to a leakage. In this case, it may be necessary to remove the pump casing and examine the piston seals individually for symptoms of wear.

This step can only be performed with a plunger pump. Axial and wobbling plate pumps are factory-assembled and cannot be dismantled for maintenance or repair. As a result, their seals cannot be replaced individually; the complete pump must be rebuilt to remedy the problem.

● Campbell Pressure Washer: Water Leaking from the Hose Connection

If your pressure washer’s hose connections are leaking, you must replace the pipe fittings/couplings at these connections.

A pipe connector connects the pipe to the low-pressure input of the pump, and a seal prevents leaks at these connections. If leakage occurs at this location, the connection or seal will likely fail. Similarly, the pump’s exit seal must be inspected and replaced if a leak occurs between the pump’s high-pressure output and the accompanying hose.

● Campbell Pressure Washer: Water Leaking from the Spray Gun

If your Campbell pressure washer’s spray gun leaks, inspect and tighten the hose-gun connection. Examine the high-pressure line’s outlet for a damaged O-ring and replace it if required.

Most pressure washers connect the high-pressure hose to the spray gun using a push fit. Ensure that the connection is secure and that it fits properly. If screws are present, check that they are tight. If the leak remains after tightening the fitting, check that the O-ring on the hose is present and unbroken. This leak may have been caused due to a damaged or missing O-ring.

Seals, gaskets, and O-rings for pressure washers are available locally and online.

Campbell Pressure Washer: Water Pressure Problems

If your Campbell pressure washer does not consistently provide suitable water pressure, follow the steps below.

● 1. Campbell Pressure Washer: Low Pressure

To fix low water pressure, check that sufficient water is entering the system and that the input line is not blocked with debris. Furthermore, ensure the spray nozzle is not damaged or blocked.

The water entering the pump must be sufficient to provide enough pressure for pressure washing. Also, you should remove any twists or bends from the input pipe, so the pump does not experience any back pressure. Most input hoses are linked to the pump through a dust filter. Examine the filter for signs of dust accumulation. Check that you are using the right nozzle and that it is free of debris if the pressure is still low.

● 2. Campbell Pressure Washer: No Pressure

If the output pressure of your machine diminishes, examine the water supply, hoses, and nozzle. At least one of the unloader valves or pumps will require troubleshooting.

In addition to nozzle debris, pressure loss may be caused by a clogged nozzle or insufficient water supply. The pump or unloader valve is most likely at fault in this scenario. Adjust the unloader valve while the pump is functioning and the trigger is engaged to detect whether the pressure has risen.

If the issue continues, the potentially faulty unloader valve must be replaced. In addition, you should inspect the plungers and O-rings of the pump for damage.

Cavitation may result in air bubbles, which, over time, can damage components of the pump and cause the pressure to decrease. Consult the owner’s handbook before changing pump components. Since most pumps are manufactured as a single unit, they cannot be disassembled and must be replaced with identical models.

● 3. Campbell Pressure Washer: Surging Pressure

If your water pressure suddenly rises, inspect the nozzle for clogs or signs of damage. Adjust the unloader valve so that a considerable amount of water enters the bypass and a smaller amount reaches the spray nozzle.

A pressure washer’s unloader valve redirects a portion of the high-pressure water flow away from the spray nozzle and into the pump intake or water tank. A tiny percentage of the incoming flow is bypassed when the unloader valve is tightened, resulting in a high output pressure at the nozzle.

When the unloader valve is loosened, the bypass flow rate goes up, and this lowers pressure spikes at the spray gun. If this does not resolve the issue, inspect the nozzle for visible indications of damage and replace it per the manufacturer’s instructions.

● 4. Campbell Pressure Washer: Drops Pressure after a Few Seconds

If the water pressure drops quickly, it could be a broken nozzle or a leaky hose. A failed unloader valve may have also led to this situation.

If the unloader is set too loosely, as opposed to the preceding example of surging, the pressure at the spray gun may decrease. If this adjustment is too lax, the flow might surpass the spring’s tension and enter the water tank. As a result, the water pressure at the nozzle outlet decreases. In addition to this adjustment, check for holes and leaks in your hoses. Make sure the nozzle is clean and free of dust.

● 5. Campbell Pressure Washer: Strange Noises from Pump

If your pump makes strange sounds, the connecting rods or bearings could be worn. Also, insufficient pump lubrication leads to the generation of unwanted noise.

Oil must be replaced in premium pressure washers with plunger-type pumps every three months or more, depending on how often you use your machine. Therefore, these pumps need continuous maintenance to function correctly. In low-end versions, the pump is either an axial or wobbling plate. Because these pumps are permanently filled with oil during manufacturing, they do not need lubrication after a certain period.

– How to Repair?

Depending on the kind of pressure washer, the pump must be maintained and greased every three months (axial or plunger). Without lubrication, metal components tend to rub together and produce a lot of noise. If this happens, the plunger pump should be removed, and the bearings and connecting rods should be inspected. If lubricating the pump does not resolve the problem, it could be necessary to replace the bearings.

The connecting rods could be faulty if the noise continues, particularly if the pump is old. If your pump has been operating for a lengthy period, fatigue and stress may accelerate the wear rate of connecting rods.

If the axial or wobble plate pump on your pressure washer is making strange sounds, you should replace it with an identical pump since it cannot be fixed.

● 6. Campbell Pressure Washer: Excessive Noise

If your pressure washer is creating a lot of noise, it might be due to damaged components within the pump, air entering the pump, a cracked pump casing, or a knocking engine caused by low fuel quality.

– Pump Damage:

If the pump has a broken or cracked casing, it may produce vibrations and generate unnecessary noise. A loud grinding sound may result if air bubbles get entrapped in the pump, which could damage the pump’s seals and connecting rods.

– Engine Knocks:

Check the condition of the fuel if the engine of your gas-powered pressure washer is knocking. I suggest using ethanol-free, unleaded gasoline with an octane number of at least 87 to avoid engine knocking. You could also consult the owner’s handbook for more details.

● 7. Campbell Pressure Washer: Oil Leaking from the Pump

A fractured O-ring or a defective seal may cause the oil to spill from the pump. If necessary, disassemble the pump and replace each seal by hand. If the product’s warranty is still valid, contact the manufacturer for this replacement.

If your pump’s warranty has expired, you may dismantle it. If you lack the necessary expertise, I advise you to ask a mechanic for help.  To assist with the replacements, I recommend obtaining an oil seal kit with various sizes of seals and rings.

Before reassembly, ensure that all fasteners and fittings are correctly tightened. Campbell pressure washers should never be subjected to high temperatures to prevent more oil leaks. The only solution for axial or oscillating plate pumps is to replace the pump.

● 8. Campbell Pressure Washer: Water in Oil

If the oil seal on the pump is compromised, water could enter the pressure washer pump. In this case, you should consider changing the seal.

The milky appearance of pump oil caused by water indicates a compromised oil seal. To replace the seal, the pump’s casing, valves, seals, and rings must be entirely removed.

I would do this only if the pump’s warranty has expired. If the pump is still under warranty, the manufacturer must repair or replace it. The only pressure washers affected are those with replaceable pump oil, such as plunger pumps. Most low-end pressure washer pumps are fully sealed with oil. Thus, they must be replaced as a unit if damaged.

● 9. Campbell Pressure Washer: Soap Not Dispensing from Reservoir

If your pressure washer cannot extract soap from the reservoir, check the nozzle size. Examine the soap injector kit’s components for evidence of wear or damage.

The owner’s handbook recommends a nozzle for the soap injection function that provides sufficient suction pressure for all detergent kinds. Make sure the correct nozzle is being used. If the issue continues, ensure that the nozzle on the injection kit is not blocked. I would consider getting a chemical injector repair kit since it may include all essential replacement components.

Campbell Pressure Washer troubleshooting table:

The pressure washer is not producing high pressure
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.
Pulsing pressure washer (output pressure varies high and low)
Inadequate water supply
Ensure that the water source is fully on and check the hose for kinks and blockage
Obstructed spray tip
Remove the debris with a needle
Pump sucking air
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 intake filter
Remove the filter and rinse it with warm water
Calcified hose, tip, or trigger
Clean the hose, pressure tip, or trigger with vinegar or a cleaner designed for this purpose
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
Erratic water pressure, changing up and down
Unloader valve
Check and clean the unloader valve. If in bad shape, replace it
No output pressure. Or the motor stops when using the trigger (electric models)
Unloader valve
Check and clean the unloader valve. If in bad shape, replace it

● Campbell Electric Pressure Washer Motor troubleshooting table:

The motor won’t start
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 into a different outlet
The pressure washer circuit breaker tripped
Please wait for the washer to cool down and restart it
The 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
I recommend calling a professional for help
Motor not working
Faulty Timer
Disconnect the leads from the timer. If your pressure washer doesn’t turn off after the time out, the timer is faulty, and you need to replace it.

● Campbell Gas Pressure Washer Engine troubleshooting table:

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 oil seals
Inspect the oil seals and replace them if worn
No water from the washer outlet
The water supply is off
Turn the water supply ON
Kink in the hose or faucet not fully open
Remove any kinks and debris from the hose or water lines. Check and fully open the faucet.
The motor won’t start
Check the battery
Check if the battery is charged correctly. Charge or replace when in bad condition. Examine the battery terminals for a proper connection. Clean if needed.
Check the fuel filter
Clean the fuel filter if dirty. In that case, check the gas tank, as this is the most likely culprit.
Check the gas supply
Check the fuel level and add if needed. Ensure that the gas can flow to the carburetor. Remove any blockage.
Check the Air-filter
Clean the air filter. Replace it when it is in bad condition or it is a paper air filter.
Check the carburetor
Remove and clean the carburetor with some carb cleaner. It is also possible to clean it without removing it.
Fuel gap blocked
Check that the hole in the fuel cap is open. Clean if needed.
The engine is stalling, or starts and stops
Check the carburetor
Remove and clean the carburetor with some carb cleaner. It is also possible to clean it without removing it.
Air filter
Clean the air filter. Replace it when it is in bad condition or it is a paper air filter.
Check for bad gas
Suppose you have old gas, more than a few months old. It can turn bad. Drain and replace the gas. Next time add a fuel stabilizer.