Fuel Pressure In Polaris 900 Rzr: How Much Is Too Much?

The fuel pressure for the Polaris RZR 900 varies depending on the model year and type. For the RZR 900 Trail model, the fuel pressure should be around 58 psi, while for the RZR XP 4 900, it is specified to be around 43.5 psi. Some owners of the 2015 RZR 900 Trail and 900 XP models have reported issues with fuel tank pressure and venting, which has led to concerns about engine fires. To address this issue, some owners have opted to drill a small hole in the filler cap to release the pressure. It is recommended to consult a certified mechanic or a Polaris dealer to properly diagnose and address any fuel pressure or venting issues with your Polaris RZR 900.

The fuel pressure regulator may be the issue

If you're experiencing issues with your Polaris RZR 900's fuel pressure, the fuel pressure regulator may be the issue. This component is responsible for maintaining the correct fuel pressure in your vehicle, ensuring optimal performance.

The standard fuel pressure for the Polaris RZR 900 model is around 58 PSI, plus or minus 2 PSI. If your fuel pressure is reading outside this range, it could indicate a problem with the regulator.

In some cases, a faulty fuel pressure regulator can cause running issues or fuel problems with your EFI Polaris. Polaris does not sell the fuel pressure regulator separately, instead requiring you to purchase the entire tank and fuel pump assembly. However, there are aftermarket options available that fit in the stock location and maintain fuel pressure within the desired range.

Additionally, there are a few troubleshooting steps you can take to address a faulty fuel pressure regulator. These include cleaning the regulator with carb cleaner and checking for any debris or stuck springs. If these steps do not resolve the issue, it may be necessary to replace the regulator or seek assistance from a Polaris dealer or expert.

It's important to note that there are two fuel pressure regulators in the Polaris RZR XP: one in the tank and one at the end of the fuel rail. If one regulator malfunctions, the other serves as a backup to maintain the correct fuel pressure.

A 2015 900 Trail and 900 XP may have fuel tank pressure issues

To address this issue, some owners have suggested replacing the check valve, although this can be difficult and may not be a long-lasting solution. Another possible solution is to drill a small hole in the filler cap to allow for ventilation and relieve pressure. It is important to note that modifying the fuel cap may not be safe and should be done with caution.

In addition to fuel tank pressure issues, some owners of the 2015 900 Trail and 900 XP have also reported problems with the fuel pump. In some cases, the fuel pump may need to be replaced due to failure or intermittent issues with the vehicle shutting down and then starting up again after a few minutes. There are aftermarket fuel pumps available that are designed to fit the Polaris RZR 900 models, and some owners have recommended specific brands and products.

It is always recommended to consult a qualified mechanic or a Polaris dealer for advice and assistance with any vehicle repairs or modifications.

The fuel pressure should be 58 +/- 2 psi

The fuel pressure for a Polaris RZR 900 should be maintained at 58 +/- 2 psi. This is the standard for the 2014+ 900/1000/Turbo models.

It is important to maintain the correct fuel pressure to avoid any issues with your vehicle. If you are experiencing problems with your Polaris RZR 900, it is recommended to consult a professional or refer to the owner's manual for guidance.

In some cases, issues with fuel pressure may be related to the fuel pressure regulator. Polaris will not sell just the fuel pressure regulator, but rather the entire tank and fuel pump assembly. However, there are aftermarket options available that can help regulate fuel pressure and maintain it at the optimal level.

Additionally, it is worth noting that some users have reported experiencing pressurized fuel tank issues after a factory recall fix. If you have recently had work done on your vehicle and are now experiencing issues with fuel pressure, it may be worth contacting the dealer who performed the work or seeking advice from other Polaris RZR enthusiasts.

A fuel pressure regulator can be purchased from third-party sellers

The standard fuel pressure for the Polaris RZR 900 is 58 +/- 2 psi for the 2014+ models. If you are experiencing issues with your fuel pressure, it could be that your fuel pressure regulator is faulty. Polaris does not sell the regulator separately, but you can purchase a replacement from third-party sellers.

Another option is the FPF fuel pressure regulator, which is compatible with the Polaris RZR 900 models from 2011 to 2016. This regulator is available on Amazon and comes with a one-year warranty. It is also compatible with other Polaris models, including the Ranger 800/900, Sportsman 570, and RZR 570.

When purchasing a fuel pressure regulator from a third-party seller, be sure to verify the compatibility of the product with your specific Polaris RZR 900 model and year. It is also recommended to consult a professional or refer to the owner's manual for guidance on proper fuel pressure settings and maintenance procedures.

The vacuum hose should be routed to the intake

The fuel pressure for the Polaris 900 RZR should be around 58 +/- 2 psi for 2014+ 900/1000/Turbo models. However, one source suggests that the fuel pressure right off the pump for the Polaris 900 RZR is 43.5 +/- 2 psi.

Now, onto the vacuum hose.

The vacuum hose, also known as a "line" or a "tube," is a flexible rubber connection that routes manifold vacuum to various components and accessories in a vehicle. It powers components such as a vacuum brake booster or a windshield wiper motor. Given the critical role that vacuum hoses play, it is essential to ensure that they are correctly installed and maintained.

When routing the vacuum hose to the intake, it is important to follow the vehicle's vacuum diagram, which can typically be found in the engine compartment, such as on the underside of the hood, on a strut tower, or on the radiator core support. This diagram will provide you with the specific routing instructions for your vehicle's vacuum hose.

In general, the vacuum hose connects to the intake manifold, which has one or more vacuum ports acting as vacuum sources. These ports are then connected to various components and accessories via the vacuum lines. It is important to note that some components, such as the intake air sensors, have both electrical and vacuum connections, so ensure that these are connected correctly.

Additionally, when replacing or working on the vacuum hose, it is recommended to replace all the vacuum hoses at once, as they tend to break down and wear out over time. This will ensure that your vehicle's vacuum system operates efficiently and effectively.

Frequently asked questions