Ameer Randolph
The Can-Am Outlander is an off-road vehicle with a fuel tank that may experience venting issues. Some users have reported problems with fuel tank vents, leading to a build-up of pressure that causes fuel to spray when the cap is opened. This issue is addressed through reconfiguration of the fuel tank vent line. Additionally, certain models have exhibited slow or non-existent venting, resulting in a loud hum or whistle from the tank. In some cases, the cause has been attributed to small cracks in the gas lines, which can be resolved by replacing the lines. To prevent similar issues, it is recommended to avoid overfilling the tank and regularly inspect the fuel system.
| Characteristics | Values |
|---|---|
| Issue | Fuel tank not venting properly |
| Possible Causes | Blocked vent, check valves gummed up, small cracks in gas lines |
| Models Affected | 2018 Outlander & Renegade, 2020 850 XTP |
| Symptoms | Fuel spray when opening the cap, loud hum or whistle from the tank, pressure build-up |
| Solution | Reconfiguration of the fuel tank vent line, replacement of gas lines |
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What You'll Learn
Fuel tank vent obstruction may cause fuel spray
If you own a 2018 Can-Am Outlander or Renegade, you may encounter an issue where the fuel tank vent becomes obstructed, causing fuel to spray onto occupants or bystanders when the fuel cap is opened. This problem occurs due to a blocked vent, leading to a build-up of excessive pressure in the fuel tank. It is important to address this issue promptly to ensure the safety of both occupants and bystanders.
To resolve this issue, BRP, the manufacturer of Can-Am vehicles, has issued a safety recall and recommends that owners refrain from using their vehicles until the necessary corrective action is taken. The corrective action involves reconfiguring the fuel tank vent line, which should take less than an hour to complete. Contact your authorized BRP Can-Am ATV dealer to schedule an appointment for this service, which will be provided free of charge.
While awaiting the service, BRP provides the following precautions to minimize the risk of fuel spray:
- Allow the vehicle to cool down for a 4-hour period before opening the fuel cap.
- Slowly open the fuel cap by turning it only ¼ to ½ turn to release any built-up pressure.
- Wait for a full minute before fully opening the fuel cap.
- Ensure that the fuel tank is never filled to more than ¾ of its full capacity.
It is important to note that even if your vehicle has aftermarket modifications, you can still receive the recall service without affecting any existing warranty or service contract. Additionally, if you no longer own the affected vehicle or if any information in the notice is incorrect, BRP requests that you contact them at your earliest convenience.
To prevent future issues with fuel tank venting, it is crucial to maintain your vehicle properly. This includes regularly changing the fuel filter, avoiding running the fuel tank below ¼ full, and having the fuel system inspected by a qualified mechanic during routine maintenance. By following these maintenance tips, you can help ensure the proper operation of your Can-Am Outlander and minimize the risk of fuel spray due to fuel tank vent obstruction.
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Reconfiguring the fuel tank vent line
If your Can-Am Outlander is experiencing fuel tank venting issues, it is recommended to reconfigure the fuel tank vent line. This process should take less than an hour to complete.
Firstly, it is important to identify the source of the problem. In some cases, the issue may be caused by a blocked or obstructed vent, leading to a build-up of pressure in the fuel tank. This can cause fuel to spray when the cap is opened, posing a safety hazard. To resolve this, you may need to clean or replace the affected components.
One user on the Can-Am Forum shared their experience with a similar issue. They discovered that the check valves on the vent line were gummed up, restricting proper ventilation and causing the tank to run under a vacuum. To access these valves, they had to remove the seat, battery, and battery tray. They also mentioned that they got some additional hose and ran the vent line up to the pod, which helped resolve the issue.
Another user with a 2020 Outlander 850 XTP experienced slow or non-existent venting, resulting in a loud humming or whistling noise from the tank. They discovered small cracks in the gas lines on top of the gas tank area, which were causing the improper venting. By replacing these lines, they were able to eliminate the noise and resolve the venting issue.
It is important to note that fuel tank venting issues can vary depending on the specific model and year of your Can-Am Outlander. If you are unsure about the cause of the problem or the steps needed to reconfigure the fuel tank vent line, it is recommended to consult an authorized BRP Can-Am ATV dealer or a qualified mechanic. They can guide you through the necessary corrective actions and ensure the issue is properly addressed.
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Vent line up to the pod
If you are running your gas tank vent line to your gauge pod, you will notice that there are two lines by the gas tank. One goes into the frame, and the other stays by the gas cap. You can take the original vent line, add an extension, and route it up to the pod, or you can make a new one, but make sure you have check valves for in and out. You will need one for the gas going down and one for when the tank gets hot and expands.
Some people opt to use one line right from the tank to under the pod, with no check valves, and this also works great.
You can also run the vent line up to the pod by accessing it from underneath, above the right rear tire.
If you are extending the vent line up to behind the display gauge, you can add loops at the ends to prevent water from travelling up the line. You can also add a small fuel filter on the end of the line to help keep water out.
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Air breather check valves were gummed up
If your Can-Am Outlander fuel tank is not venting, it could be due to blocked air breather check valves. These valves are designed to release excess pressure from within the tank and admit air to regulate pressure and counteract vacuum conditions. If these valves become gummed up or blocked, it can cause the fuel tank to run under a vacuum, leading to engine stalling, poor performance, or even complete engine failure.
To rectify this issue, you will need to clean or replace the air breather check valves. Here are the steps you can follow:
- Disconnect the negative battery terminal before starting any work for safety.
- Remove the seat, battery, and battery tray to access the air breather check valves.
- Inspect the valves for any visible signs of wear, corrosion, damage, or blockages.
- If the valves are gummed up, you will need to clean them using appropriate solvents or cleaning agents. Ensure that the cleaning agents are compatible with the valve materials.
- Manually test the valves after cleaning to ensure they open and close at the correct pressure and vacuum settings.
- Reinstall the valves and reconnect the battery terminal.
- Prime the fuel system by turning the ignition to the "on" position for a few seconds without starting the engine.
It is important to note that you should refer to your Can-Am Outlander's service manual for detailed instructions on fuel tank maintenance and always take the necessary safety precautions when working on your vehicle. Additionally, breather valves should be inspected and cleaned regularly to prevent future issues.
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Faulty tank vents
If your Can-Am Outlander fuel tank is not venting, it could be due to a faulty tank vent. This issue has been observed in some 2018 Outlander and Renegade models, where a blocked vent causes a build-up of pressure in the fuel tank, leading to fuel spray when the cap is opened.
In some cases, the check valves in the vent line may become gummed up, restricting proper ventilation and causing the tank to run under a vacuum. To rectify this, you will need to access the hoses by removing the seat, battery, and battery tray. Reconfiguring the fuel tank vent line can resolve the issue, and this process typically takes less than an hour.
It is important to address a faulty tank vent as it can lead to safety hazards, such as fuel spray. If you suspect a blocked vent, it is recommended to contact your authorized BRP Can-Am ATV dealer and schedule an appointment for the necessary corrective action. In the meantime, BRP advises against using your vehicle until the issue is resolved.
Additionally, some users have reported that running a new vent line up to the pod has helped resolve ventilation issues. However, it is always best to consult a qualified technician or your authorized dealer to ensure the problem is accurately diagnosed and safely addressed.
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Frequently asked questions
Your Can-Am Outlander fuel tank may not be venting due to a blocked vent. This can cause the fuel tank to build pressure and spray fuel when the cap is opened.
To fix a Can-Am Outlander fuel tank that is not venting, you should first contact your authorized BRP Can-Am ATV dealer and schedule an appointment for a safety recall. They will reconfigure the fuel tank vent line, which should take less than an hour.
If you need to open the fuel cap of your Can-Am Outlander that is not venting, you should take the following precautions:
- Let the vehicle cool down for 4 hours.
- Slowly open the fuel cap a maximum of ¼ to ½ turn to release pressure.
- Wait for a full minute before fully opening the fuel cap.
- Do not fill the fuel tank to more than ¾ of its capacity.
