A cracked pump on a pressure washer can be a frustrating problem, but fortunately, it’s not one that can’t be fixed. A pressure washer pump is a vital component of the machine, as it helps to generate the force needed to clean surfaces effectively. If the pump becomes cracked, it can lead to a loss of pressure or even cause the pressure washer to stop working altogether.

There are several steps you can take to fix a cracked pump on a pressure washer. The first step is to assess the extent of the damage. If the crack is small and superficial, you may be able to repair it using epoxy or another suitable adhesive. However, if the crack is large or deep, it may be necessary to replace the pump entirely.

Prior to attempting any repairs, it’s important to disconnect the pressure washer from its power source and relieve any built-up pressure in the system. This will ensure your safety and prevent any further damage to the pump or other components. Once you have done this, you can begin the repair process.

If you’re repairing a small crack using epoxy or adhesive, start by cleaning the area thoroughly to remove any dirt or debris. Apply the adhesive according to the manufacturer’s instructions and press the crack together firmly. Allow the adhesive to cure completely before testing the pressure washer.

What is a pressure washer?

A pressure washer is a powerful cleaning tool that uses high-pressure water to remove dirt, grime, and other contaminants from various surfaces. It consists of a motor or engine that drives a pump, which pressurizes the water. The pressurized water is then forced through a nozzle, creating a strong stream that can effectively clean a wide range of surfaces.

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Pressure washers are commonly used for outdoor cleaning tasks such as washing cars, driveways, decks, and siding. They can also be used for industrial cleaning applications and in commercial settings. The high-pressure water stream produced by a pressure washer is extremely effective at removing stubborn dirt and stains.

Pressure washers come in different sizes and power levels, ranging from small electric models suitable for occasional home use to large gas-powered models designed for heavy-duty cleaning jobs. Some pressure washers also come with additional features such as adjustable pressure settings and various nozzle attachments to customize the cleaning process.

Using a pressure washer is relatively easy. Simply connect a water source, such as a garden hose, to the pressure washer and plug it into a power source if it is an electric model. Then, adjust the pressure settings if necessary and squeeze the trigger on the wand to start spraying. Move the wand back and forth across the surface you are cleaning, maintaining a consistent distance to ensure even cleaning.

It is important to follow safety precautions when using a pressure washer, as the high-pressure water stream can cause injuries if not used properly. Always wear protective gear such as safety glasses and gloves, and be cautious of using the pressure washer around delicate surfaces or objects that may be damaged by the force of the water.

In conclusion, a pressure washer is a versatile cleaning tool that can make a tough cleaning job much easier. With its high-pressure water stream, it can effectively remove dirt, grime, and stains from a variety of surfaces, making it an essential tool for many outdoor cleaning tasks.

Why is a cracked pump a problem?

A cracked pump on a pressure washer can cause a range of problems and should be addressed promptly. Here are a few reasons why a cracked pump is a problem:

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1. Leakage: A cracked pump will likely result in leakage, causing water or fluid to escape from the pump and reducing the pressure and effectiveness of the washer. This can lead to reduced cleaning power and make it difficult to complete tasks efficiently.

2. Loss of pressure: With a cracked pump, the pressure washer may lose its ability to generate and maintain high pressure. This can make it difficult to tackle tough cleaning jobs, such as removing stubborn dirt and grime from surfaces.

3. Increased wear and tear: When a pump is cracked, it can put additional stress on other components of the pressure washer. The increased strain can lead to accelerated wear and tear on the system, potentially causing further damage and requiring costly repairs.

4. Safety concerns: A cracked pump can pose safety risks, especially if there is a significant leak. The escaping water or fluid can create slippery surfaces, increasing the chances of accidents or falls. Additionally, a compromised pump may fail unexpectedly, leading to potential injuries.

5. Costly repairs or replacement: Ignoring a cracked pump can result in more significant damage to the pressure washer, requiring expensive repairs or even necessitating the replacement of the entire unit. It is more cost-effective to address the issue early on and prevent further damage.

Overall, a cracked pump on a pressure washer should not be taken lightly. It is important to address the issue promptly to ensure the efficient functioning and longevity of your pressure washer.

Step 1: Diagnosing the problem

Before attempting to fix a cracked pump on a pressure washer, it is important to properly diagnose the problem. By identifying the root cause of the issue, you can ensure that you are taking the correct steps to address it.

Inspecting the pump

The first step in diagnosing a cracked pump is to thoroughly inspect it. Carefully examine the entire pump body, including the base, housing, and connections. Look for any visible cracks or damage. It is important to remember that cracks may not always be obvious, so be sure to closely examine the pump from different angles and use a flashlight if needed.

Checking for leaks

In addition to visual inspection, it is also important to check for leaks. Turn on the pressure washer and carefully observe the pump for any signs of water leakage. Pay close attention to the areas where the pump connects to the hose or other components. Leaks can often indicate a cracked pump.

Note: If you notice any leaks, it is important to turn off the pressure washer and disconnect it from the power source before proceeding.

If you confirm that there is a crack in the pump, it is necessary to take immediate action to prevent further damage. Continuing to use a pressure washer with a cracked pump can lead to more extensive damage and potentially expensive repairs.

In the next step, we will discuss how to safely remove the pump for repair or replacement.

Signs of a cracked pump

If you suspect that the pump on your pressure washer may be cracked, there are several signs to look out for. These indicators can help you identify the problem and take the necessary steps to fix it:

1. Loss of pressure

One of the most common signs of a cracked pump is a noticeable loss of pressure. If you notice that the water pressure is not as strong as it used to be or if the pressure is inconsistent, there may be a crack in the pump. This can affect the overall performance of your pressure washer.

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2. Leaking water

Another sign of a cracked pump is water leakage. If you see water leaking from the pump itself or from any connections, it may indicate a crack in the pump housing. This can lead to water damage, reduced performance, and even potential safety hazards if left unaddressed.

If you notice any of these signs, it’s important to address the issue as soon as possible to prevent further damage to your pressure washer. Ignoring a cracked pump can lead to more serious issues and potentially require costly repairs or replacement. It’s best to consult a professional or refer to the manufacturer’s guidelines for repairing or replacing a cracked pump.

Inspecting the pump

Before attempting to fix a cracked pump on a pressure washer, it is important to thoroughly inspect the pump to assess the damage and determine if a repair is feasible. Follow these steps to inspect the pump:

  1. Turn off the pressure washer: Before inspecting the pump, make sure to turn off the pressure washer and disconnect it from any power source.
  2. Release pressure: To ensure your safety, release any built-up pressure in the pump by squeezing the trigger on the spray gun until no more water comes out.
  3. Remove the pump cover: Depending on the make and model of your pressure washer, you may need to remove the pump cover or access panel to inspect the pump. Consult the owner’s manual for specific instructions.
  4. Visually inspect the pump: Once you have access to the pump, carefully examine it for any visible cracks or damage. Pay close attention to areas where leaks are most likely to occur, such as the fittings, seals, and connections.
  5. Check for loose components: While inspecting the pump, check for any loose or missing components. Make sure all fasteners, fittings, and connections are secure.
  6. Inspect hoses and fittings: In addition to examining the pump itself, inspect the hoses and fittings connected to the pump. Look for any signs of damage, such as cracks, leaks, or worn-out seals.

By thoroughly inspecting the pump and its components, you can determine the extent of the damage and decide on the best course of action to fix the cracked pump on your pressure washer.

Step 2: Gathering necessary tools and materials

Before starting the repair process, it’s important to gather all the necessary tools and materials. Here are the items you’ll need:

1. Replacement pump – make sure you purchase a pump that is compatible with your pressure washer model.

2. Screwdriver – you’ll need a screwdriver to remove any screws or fasteners holding the pump in place.

3. Adjustable wrench – this tool will be useful for loosening and tightening bolts or nuts.

4. Pressure washer oil – it’s a good idea to have some pressure washer oil on hand to lubricate the new pump and ensure smooth operation.

5. Clean rags or towels – these will come in handy for wiping away any excess oil or cleaning any dirt or debris from the pump.

6. Safety goggles and gloves – it’s important to protect your eyes and hands while working on your pressure washer. Safety goggles will shield your eyes from any debris, while gloves will protect your hands from sharp edges or hot surfaces.

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Make sure you have all these tools and materials ready before you move on to the next step. Being prepared will help ensure a smooth and efficient repair process.

Tools Required

When fixing a cracked pump on a pressure washer, you will need the following tools:

1. Wrench set

It is essential to have a set of wrenches in various sizes to loosen and tighten bolts and nuts. Make sure to have both metric and standard wrenches to cover all possible sizes.

2. Socket set

A socket set is necessary to remove and install bolts and nuts with a socket wrench. Similar to wrenches, it is recommended to have both metric and standard sockets to accommodate different sizes.

3. Screwdriver set

A set of screwdrivers will be needed to remove and install screws. It is preferable to have a set of both flathead and Phillips head screwdrivers to tackle different screw types.

4. Pliers

Pliers are useful for holding, bending, and cutting various materials. It is beneficial to have both needle-nose and adjustable pliers to handle different tasks.

5. Utility knife

A utility knife is handy for cutting and trimming materials such as hoses and seals. Make sure to have spare blades available for replacement when necessary.

6. Pressure washer pump repair kit

Depending on the extent of damage to the pump, a repair kit may be required. This kit typically includes seals, o-rings, and other components necessary for pump repair. Make sure to purchase a kit compatible with your pressure washer model.

Having these tools readily available will make the process of fixing a cracked pump on a pressure washer much smoother and efficient.


What causes a pump on a pressure washer to crack?

A cracked pump on a pressure washer can be caused by a variety of factors, including excessive pressure, freezing temperatures, or simply wear and tear over time.

Can a cracked pump on a pressure washer be repaired?

Yes, a cracked pump on a pressure washer can be repaired. Depending on the severity of the crack, it may be possible to patch it up using epoxy or sealants. However, in some cases, it may be necessary to replace the pump entirely.

How can I prevent the pump on my pressure washer from cracking?

To prevent the pump on your pressure washer from cracking, it is important to use the machine properly and maintain it regularly. Avoid using excessive pressure and make sure to store the pressure washer in a dry, protected area to prevent freezing temperatures from causing damage.

What are the signs of a cracked pump on a pressure washer?

Signs of a cracked pump on a pressure washer may include leaks, loss of pressure, unusual noises, or visible cracks or damage on the pump itself.

Do I need professional help to fix a cracked pump on a pressure washer?

While it is possible to fix a cracked pump on a pressure washer yourself, it is recommended to seek professional help, especially if you are not experienced in repairing pressure washers. A professional can assess the damage and determine the best course of action to fix or replace the pump.

What causes a pump on a pressure washer to crack?

A pump on a pressure washer can crack due to several reasons. It could be caused by excessive pressure, debris getting stuck in the pump, or simply wear and tear over time.