How to Test Fuel Pump on Polaris Ranger
Fuel pumps are essential parts of every vehicle, including UTVs. If faulty, they can cause various functionality issues, including not starting the engine. To limit your downtime, you should know how to test fuel pump on Polaris Ranger and take appropriate action when needed.
Let us guide you through testing the fuel pump on your Polaris Ranger. As a bonus, we have prepared some practical tips for preventing fuel pump failure and increasing the longevity of this vital component.
How Do I Know If My Polaris Ranger Fuel Pump Is Bad?
As a crucial part of the fuel system, the pump will show obvious signs of malfunctioning. The common Polaris Ranger fuel pump issues that indicate malfunctions might include:
- Vehicle not starting at all
- The UTV struggles to start
- The engine starts, stalls, and dies
- Reduction in performance and loss of power
- Engine sputtering
- Reduced fuel economy
- Power loss under heavy load
- The engine warning light is on
Before you read ahead to the steps on how to test fuel pump on Polaris Ranger, we recommend you ensure the above-mentioned signs are not caused by:
- Low battery voltage
- Enough fuel in the tank
- Dirty air filter
- Low compression
- Malfunctioning sparks
Generally, all fuel pump issues can be easily solved. Yet, if there is too much damage to the fuel system, you might want to consider looking for a new Polaris Ranger for sale and get yourself a brand new UTV.
How to Test Fuel Pump on Polaris Ranger
There are several ways to test the fuel pump on your Polaris UTV. Even if you don’t have any knowledge about repairing, you can still perform at least one test by yourself. If you are unsure about the results of the tests, you can consult our service department. What you can do is as follows:
Checking whether the fuel pump cycles
The first and most basic test is turning the Ranger's key to the run position without starting it. When doing so, you should hear a buzzing sound for approximately three to four seconds. If you don’t hear any noise, it means your fuel pump doesn’t cycle.
Your fuel pump might not be able to cycle if there is no power going to it; you should test the power wire and ground wire with a digital multimeter. If there is no power going to the fuel pump, you should continue by checking whether you have an open circuit or any faulty parts that control the circuit.
Inspecting the fuel pump fuse and relay
One reason why a fuel pump on a Polaris Ranger might not work as it should is a blown fuse or a faulty relay. If that is true with your UTV, you should check the fuse box. In most models, the fuse box is under the middle seat or the dashboard.
Your owner’s manual contains a fuse box diagram that will assist you in finding the fuel pump relay or fuse. Once you find it, you can check whether the fuse is blown by holding it up to the light and seeing whether the wire is a continuous thread.
If it appears broken, that is a sign that the fuel pump fuse is blown. Also, visible signs of burn or broken parts mean that you must replace the fuse.
Typically, there are space fuses in the box itself; you should take the fuse with the same amperage as the blown fuse. In general, Polaris Ranger UTVs use a 10A fuse for the fuel pump.
Verifying fuel pump pressure retention
The second way of how to test Polaris fuel pump is to conduct a pressure-holding check. We recommend you perform this test after you have determined that the fuel pump cycles and that there is no electrical issue. The pressure test determines whether the fuel system can maintain pressure with the engine running.
You will need a fuel pressure gauge to test the fuel pump's holding pressure capabilities. A good-functioning fuel pump should raise the device's needle up to a certain pressure and slightly lower it when it shuts off. If the needle keeps dropping, that might be a sign that the check valve in the fuel pump is not working properly.
In addition, you should check the fuel pressure under acceleration. You will need the same Polaris Ranger fuel pressure tester when the key is inserted.
For this test, you should turn on the engine. The needle on the pressure gauge should rise and stay consistent while the engine is working. The same consistency should be achieved with constant throttle.
How to Replace a Fuel Pump on Polaris Ranger
The best practice is to let our professionals handle the replacement of a malfunctioning fuel pump. If you know your way around with tools and understand how a UTV works, you might replace the fuel pump by following these steps:
- Park the Ranger on a flat surface.
- Disconnect the battery.
- Remove the driver and passenger seats.
- Locate the fuel pump, which is typically inside the fuel tank.
- Clean the area on top of the fuel tank and around it.
- Unplug the power from the fuel pump.
- Remove all the connections to the fuel pump.
- Unscrew the retaining nut holding the fuel pump.
- Remove the fuel pump and the rubber O-ring.
- Inspect the fuel tank to make sure everything is in working condition.
- Install the new fuel pump and ensure everything is connected in the same direction as it was previously.
Practical Tips for Preventing Fuel Pump Failure on Polaris Ranger
Fuel pump problems can be common in any vehicle if you don’t maintain it properly and take certain actions to prolong its life. Here are our practical tips:
Do regular maintenance
According to the official Polaris Ranger maintenance schedule, you should cycle the key to pressurize the fuel pump every 100 operating hours, 1,000 miles or once a year. While inspecting the fuel pump, you should also check the entire fuel system for leaks.
Next, regular fuel filter changes are necessary if you want to prolong the life of your fuel pump. Fuel filters preserve the pump's efficiency and protect it from damage caused by contaminants. We recommend replacing all of your filters, including the fuel filter, every 100 hours.
Use high-quality clean fuel
Another way to safeguard the fuel pump of your Polaris Ranger is to use high-quality, clean fuel. Also, you should always keep your fuel tank at least two-thirds full. If you drive the Polaris Ranger or any other vehicle on low fuel, the fuel pump will run at a higher temperature than normal, causing damage and premature wear.
Avoid overheating at any cost
As the fuel pump is sensitive to temperature, you should ensure your Polaris Ranger is not overheating. Perform regular fuel pressure regulator checkups and make sure it works properly, as it prevents the fuel pump from working too hard.
Let us finish by stating that you can’t prevent fuel pump issues altogether. As with every other vehicle part, fuel pumps age and might show signs of wear and tear over time or with high mileage.
Conclusion
As a current or future owner, one of the essential skills you should have is knowing how to test fuel pump on Polaris Ranger. There are three easy ways to do it: checking whether the fuel pump cycles, ensuring the fuel pump fuse and relay work, and checking how well the fuel pump holds pressure.
If your fuel pump needs to be replaced, you can order a new one from us as Polaris Ranger dealers!