Fuel Pressure Fixes For Can-Am Commander Vehicles

The Can-Am Commander is a popular ATV and UTV vehicle, however, it has been known to have some problems with its fuel pressure. Fuel system issues are common in side-by-sides, and the Can-Am Commander is no exception. In this paragraph, we will discuss the fuel pressure problems that some Can-Am Commander owners have experienced and potential solutions to these issues. Some owners have reported that their vehicle suddenly loses power or stalls, even with a full tank of fuel. This could be due to a faulty fuel pump, a blocked fuel filter, or impurities in the fuel lines. It is recommended that owners check their fuel pressure and replace or clean any necessary parts to ensure their vehicle is running correctly.

Fuel pump problems

One sign of a failing fuel pump is a whining or whirring noise coming from your fuel tank. A healthy pump should be quiet and only make a low, barely noticeable humming sound. If you hear a loud, whining noise, this indicates that your pump is damaged and unable to maintain the correct fuel pressure.

Another symptom of a bad fuel pump is when your car stutters, stumbles, and struggles to maintain speed. This is caused by an insufficient amount of fuel being supplied to the engine, resulting in lower performance and drivability issues.

If your Can-Am Commander experiences these issues, you should consider replacing the fuel pump. An OEM Can-AM Commander fuel pump replacement typically costs around $79.45. Additionally, you may want to replace the fuel filter and clean the fuel injectors to prevent further issues.

It is important to note that fuel pump problems can also be caused by a faulty fuel pressure regulator or a clogged fuel filter. Before replacing the fuel pump, it is recommended to perform a fuel pressure test to confirm that it is the source of the issue.

Furthermore, keeping your gas tank at least a quarter full can help prolong the life of your fuel pump. Gasoline acts as a coolant for in-tank fuel pumps, and running your vehicle with a low fuel level can cause the pump to overheat and fail prematurely.

Fuel pressure regulators

Function of Fuel Pressure Regulators

Symptoms of a Faulty Fuel Pressure Regulator

If your Can-Am Commander is experiencing any of the following issues, it could indicate a problem with the fuel pressure regulator:

• Erratic idle: If your machine struggles to maintain a stable idle, it could be due to inconsistent fuel pressure caused by a faulty regulator.
• Backfiring: Backfiring, or afterfiring, can occur when the fuel-air mixture in the cylinders is incorrect, which can be a result of irregular fuel pressure.
• Low fuel pressure: If your fuel pressure gauge reads below 50 psi, it could indicate a faulty regulator.
• Poor engine performance: If your engine struggles to accelerate or maintain speed, it may not be receiving sufficient fuel due to a faulty regulator.

Troubleshooting and Maintenance

If you suspect an issue with your fuel pressure regulator, here are some troubleshooting and maintenance tips:

• Check fuel pressure: Use a fuel pressure gauge to measure the fuel pressure when the engine is running. Compare the reading to the recommended pressure for your vehicle.
• Inspect the regulator: Visually inspect the regulator for any signs of damage, corrosion, or debris buildup.
• Replace the regulator: If the regulator is faulty, you may need to replace it. Ensure you purchase a regulator that is compatible with your Can-Am Commander's fuel system.
• Maintain fuel quality: Always use high-quality fuel and regularly clean your fuel tank to prevent debris and contamination, which can damage the regulator.
• Monitor fuel level: Running your vehicle with a low fuel level can cause premature wear on the fuel pump and regulator. Ensure you maintain a sufficient fuel level during operation.

Fuel filters

Understanding Fuel Filters

Types of Fuel Filters

There are two main types of fuel filters found in the Can-Am Commander:

• In-Line Fuel Filters: These filters are typically cylindrical or rectangular and are installed in the fuel line between the fuel tank and the engine. They are designed to trap larger contaminants and are usually made of paper, mesh, or a synthetic material.
• Fuel Pump Filters: Also known as "sock filters," these are smaller filters found inside the fuel pump assembly. They are designed to catch finer particles that may have passed through the in-line fuel filter.

Maintaining Fuel Filters

To ensure optimal performance and fuel system health, it is essential to regularly maintain your fuel filters:

• Fuel Filter Replacement: It is recommended to replace your fuel filters at regular intervals, typically every 10,000 to 15,000 miles, or as specified in your Can-Am Commander's maintenance schedule. Replacing the filters ensures that they can effectively remove contaminants and prevents them from becoming clogged, which could restrict fuel flow to the engine.
• Using High-Quality Fuel: Always use high-quality, clean fuel from reputable sources. This helps minimize the amount of contaminants that enter the fuel system, reducing the risk of clogging and damage to the filters and fuel injectors.
• Fuel Additives: Consider using fuel additives that are designed to clean and protect the fuel system. These additives can help dissolve and remove deposits from the fuel injectors, intake valves, and combustion chamber, improving overall engine performance and fuel efficiency.
• Fuel Filter Inspection: It is a good practice to periodically inspect your fuel filters, especially if you suspect fuel contamination. Look for signs of water accumulation, excessive debris buildup, or damage to the filter media. If the filters appear severely clogged or damaged, replace them immediately.

Troubleshooting Fuel Filter Issues

If you experience fuel-related problems with your Can-Am Commander, such as difficulty starting, stalling, or poor engine performance, the fuel filters should be one of the first components to check:

• Fuel Pressure Test: As discussed in the forum posts, performing a fuel pressure test can help diagnose potential issues with the fuel system, including the fuel filters. Ideal fuel pressure for the Can-Am Commander is around 50 PSI, and a drop in pressure could indicate a clogged fuel filter.
• Visual Inspection: If the fuel pressure is within the acceptable range but you still experience performance issues, consider removing and visually inspecting the fuel filters. Look for signs of heavy debris buildup or damage to the filter media. If the filters appear severely clogged, replace them with new ones.
• Fuel Filter Replacement Interval: Even if your Can-Am Commander is running smoothly, it is important to replace the fuel filters at the recommended intervals. Proactive replacement can help prevent unexpected fuel-related issues and ensure the long-term health of your engine.

In conclusion, fuel filters are critical components of your Can-Am Commander's fuel system. By understanding their function, performing regular maintenance, and knowing how to troubleshoot potential issues, you can help ensure optimal engine performance, fuel efficiency, and the longevity of your vehicle. Remember to always refer to your owner's manual for specific maintenance recommendations and procedures for your particular model.

Fuel pump replacement

If your Can-Am Commander is experiencing fuel pump problems, it may be time to replace the fuel pump. Here is a step-by-step guide on how to do it:

Step 1: Park Your Vehicle and Check the Fuel Pump

Park your vehicle on a level surface and engage the parking brake. Locate the fuel pump, which is usually inside the fuel tank. Open the fuel cap and turn the key to the "ON" position. Listen at the filler opening—a functional fuel pump will produce a soft hum for two to three seconds.

Step 2: Check the Fuel Pump Fuse and Relay

If the fuel pump is not functioning, check the fuel pump fuse and relay. If the fuse is blown, replace it with one of the same amperage. If the fuse and relay are functional, check for power and ground at the fuel pump.

Step 3: Prepare for Fuel Pump Replacement

Relieve the fuel system pressure by running the engine and pulling the fuel pump relay, or by pressing the Schrader valve on the pressure line momentarily to release a small spray of fuel. Disconnect the negative battery cable. Drain as much fuel as possible from the tank.

Step 4: Access the Fuel Pump

Remove the fuel tank or the back seat, depending on your vehicle's design. Support the fuel tank with a jack and a block of wood. Remove any retaining straps or bolts holding the tank in place, and carefully lower it down.

Step 5: Remove and Replace the Fuel Pump

Disconnect the fuel lines and electrical connections from the fuel pump. Take note of the wiring and fuel line connections before removing the old pump. Remove the old pump and compare it with the new one to ensure you have the correct replacement. Install the new fuel pump, reconnect the fuel lines and electrical connections, and secure the fuel tank back in place.

Step 6: Reassemble and Test

Reconnect the negative battery cable and fill the fuel tank. Conduct a road test to confirm that the new fuel pump is functioning properly.

Additional Tips:

• Work in a well-ventilated area, preferably outdoors, to minimise the risk of inhaling toxic fumes or causing a fire.
• Always wear safety gear, such as gloves, safety glasses, and appropriate clothing, to protect yourself from fuel spills.
• Clean the area around the fuel pump before removing it to prevent dirt and debris from falling into the fuel tank.
• Consider replacing related components, such as the fuel filter, fuel pump strainer, and fuel tank O-ring or gasket.

Please note that this guide provides general instructions, and the specific process may vary depending on your vehicle's make and model. Always refer to your vehicle's service manual or seek professional assistance if needed.

Fuel pump assembly

The fuel pump assembly is the unit in a gas tank that sends fuel to the engine. It is made up of several components, each with a specific function in the fuel pumping system. The assembly ensures that clean, pressurised fuel reaches the fuel injectors.

The main components of a fuel pump assembly include a screen filter, motor, and pump. The filter screen is a simple mesh strainer that traps larger debris. The pump is made up of a small DC motor and an impeller to push the fuel. The motor spins at high speed and, along with several valves, creates the pressure needed to pump the fuel. The pressure regulator controls the amount of fuel that gets pumped and ensures the engine doesn't run too lean or too rich.

When diagnosing a fuel pump assembly, you should check for power failure by inspecting the fuse box. You can also check the circuit going to the pump and test the fuel pump relay. A voltmeter can be used to measure the voltage of the fuel pump assembly wires. A fuel pressure test can also be performed to check for problems with the motor or valves.

If you are experiencing issues with your Can-Am Commander, it may be related to the fuel pump assembly. There are several signs that can indicate a failing fuel pump assembly, including low gas mileage, hard starting, whining fuel tank noise, loss of engine power, and sudden and erratic power surges. If the damage is severe, the vehicle may not start at all.

To fix a fuel pump assembly, you may need to replace blown fuses, repair or replace corroded or broken connections, or address a clogged filter or bad electrical connections. In some cases, you may need to rebuild or replace the entire fuel pump assembly.

Frequently asked questions