Ram 1500 Fuel Filler Neck Problems [+Solutions]

The Ram 1500 is a powerful truck that gives confidence when driving on the highway. But the confidence gets sputtered when the gas pump doesn’t work correctly or there is an issue when refueling. One of the main reasons for the Ram 1500 fuel-filling problem is issues with the fuel-filler neck.

This is very frustrating and sometimes causes potential safety hazards. This issue mostly affects 2017-2020 Ram 1500 models. If you are facing the same issue, there are a few things you can do. First, ensure that the fuel tube is properly seated on the neck of the gas tank.

If they are not properly seated, it causes partial blockage and prevents the fuel flow into the tank. As a result, the fuel pump stops prematurely without filling the tank. This problem can be solved by yourself, or you can take your vehicle to a professional mechanic.

In this article, I have thoroughly discussed what a fuel filler neck, its functions, failing symptoms, problems, and solutions are.

What is a Fuel Filler Neck

The fuel filler neck also known as fuel inlet pipe, is an important component of a vehicle’s refueling system. It serves as a conduit, that transfers gasoline or diesel fuel from the pump nozzle to the fuel tank. Generally, the fuel filler neck is situated behind the fuel door on the exterior of the vehicle.

The fuel filler neck is an essential part because any problems with it cause several problems during refueling and sometimes pose safety risks. So, a bad fuel filler neck should be fixed as soon as possible.

Now, if you want to know what are the symptoms of a bad fuel filler neck, check out the following common symptoms:

  • Difficulty in inserting and removing the gas pump nozzle.
  • Smell of gasoline around the Ram 1500.
  • Gas cap lose-fitting or stuck.
  • Fuel spilling out during refueling.
  • Check engine warning light.
  • Reduced fuel efficiency.
  • Fuel vacuum leaks.

Common Ram 1500 Fuel Filler Neck Problems and Solutions

Fuel filler neck problems in the Ram 1500 can be challenging for owners. Finding an effective solution is essential for maintaining a vehicle’s peak performance and safety standards.

1. Corrosion and Rust Build-Up

With time corrosion and rust build up on the fuel filler neck, especially if you drive in high humidity or exposure to road salt. This can affect the neck’s structural integrity and cause fuel spillage and leaks. To prevent this problem, regularly check the fuel filler neck for any signs of corrosion or rust.

If there is any corrosion or rust detected clean it properly. Use a protective coating after cleaning, so that it will prevent further corrosion. If the filler neck is severely damaged, replace it.

2. Obstructions in Refueling

Dirt, dust, or debris accumulating on the fuel cap can obstruct the fuel filler neck, preventing the fuel pump nozzle from inserting smoothly and making refueling challenging.

During regular vehicle maintenance, also clean the fuel filler neck and fuel cap. You can clean the filler neck using compressed air or a soft brush. After refueling, secure the fuel cap tightly.

3. Sticky Pump

Sticky pump is a widespread issue in the 2015-2019 Ram 1500 model years. The fuel shutoff valve in the filler neck is the source of the problem. This valve helps to prevent fuel overflows. But when the valve is malfunctioning, it gets sticky and the pump nozzle becomes stuck when it’s removed.

There are two ways to fix the problem. First, Ram issued recalls for the sticky pump problems. So, check the recall records and service bulletin. If your vehicle comes under the recalls or service bulletin, take your vehicle to the dealership.

Some dealerships offer a redesigned filler neck that fixes the sticky valve issue. Another way is, to clean the valve by a professional mechanic. This process requires some specialized tools, so, don’t try to clean the sticky pump by yourself.

4. Cracked Filler Neck

Many owners have expressed dissatisfaction over the filler neck cracking with aging. A crack in the filler neck can also be developed by exposure to the environmental elements or by physical impact.

As a result, the fuel filler neck leaks fuel or creates difficulties while refueling. The easy solution for this problem is to replace the fuel filler neck. Inspect the filler neck regularly and if you find any major cracks in the filler neck, replace them.

5. Inappropriate Fit

The fuel filler’s inappropriate fittings cause several neck problems. If you notice that the gas pump nozzle is forcing its way into the filler neck, it is because of a misaligned or warped filler neck. A misaligned filler neck causes refueling difficulties and also causes the fuel to spill.

Take your Ram 1500 to a professional mechanical shop to fix the problem. The solutions vary depending on the severity of the problem, ranging from realignment to complete filler neck replacement.

How to Replace Fuel Filler Neck Ram 1500

If the Ram 1500’s fuel filler neck is severely damaged or cracked, replacing the neck is the best option.

Follow the steps given below to replace a bad fuel filler neck:

  1. Park the vehicle on a flat surface, engage the parking brake, and disconnect the battery.
  2. Drain the fuel tank properly
  3. Unplug the vent hose and fuel filler neck
  4. There are four bolts that hold the filler neck. Remove them.
  5. Remove the filler neck.
  6. Also, remove the two straps that holding the fuel tank.
  7. Properly align the new filler neck with the filler housing.
  8. Screw the four mountings again.
  9. Reconnect the vehicle battery.
  10. Double-check all the connections and ensure all parts are aligned properly.
  11. Now, carefully try to refuel the vehicle and observe whether everything is okay or not.

Note: You should only perform this process if you have the necessary equipment and general knowledge about Ram 1500’s fuel system.

Otherwise, it will be best to take your vehicle to a professional mechanic. A professional mechanic can handle this replacement process safely and efficiently.

Watch this video to learn more about how to replace 2019 Ram 1500 fuel filler neck.

What Causes a Fuel Filler Neck to Fail

The fuel filler neck goes bad for a few problems, such as a garden hose can get worn out.

Some other causes for a fuel filler neck to fail are given below:

  • Corrosion: With time, exposure to moisture or salt corroded the filler neck. As a result, the neck cracks or leaks.
  • Age and Wear: If the Ram 1500 travels too many miles and cannot maintained properly, it deteriorates the filler neck. After too much time, the rubber hoses get brittle, metal parts corrode, and plastic components crack. Ultimately, they lead to failure of the filler neck.
  • Inappropriate Refueling: Sometimes, forcefully inserting the pump nozzle or inserting it at an incorrect angle imposes strain on the filler neck. It also causes the fuel filler neck to fail.
  • Faulty Sealing: If the fuel cap cannot seal properly, it causes the filler neck to fail.

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