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Jeep Wrangler YJ Fuel Tank

Easy Maintenance Tips for the Jeep Wrangler JK Fuel Tank

The role of the fuel tank of your Jeep Wrangler JK is simple yet essential: it holds all the fuel needed to keep the truck running. So when it breaks down, it can virtually render your Jeep inoperable. This is why it is important for the fuel tank to be inspected regularly, maintained properly, and replaced when necessary to ensure that the vehicle continues to operate in optimum conditions.

Given its location and design, there are only limited options for you to maintain the Jeep Wrangler fuel tank. But these options can go a long way in protecting the tank against damage and wear. In this guide, we'll share some key tips for you to use in maintaining your Wrangler's fuel tank.

  • Keep the tank full.

One of the easiest ways to keep your fuel tank in top condition is to have the tank topped up as often as possible. This is because the gas in your tank also serves as a coolant for the fuel pump. Keeping the fuel levels in your tank low will cause the pump to overheat, rapidly increasing the temperature inside the tank and potentially damaging the pump and other internal components.

  • Replace the fuel filter regularly.

The fuel filter catches impurities in the fuel and prevents it from reaching the engine, and over time these impurities will start to build up. And if not replaced, these deposits will clog the fuel filter, causing the engine to stall, hesitate, or lag whenever you step on the gas pedal.

The DMV suggests that fuel filters should be replaced every 30,000 miles, although this must be done sooner if any of the symptoms mentioned above occurs in your vehicle.

  • Do not refuel from a station that is also refilling their fuel stores.

This is because the refilling process kicks up the sediments at the bottom of the fuel storage tanks, which may get siphoned by the gas pump and contaminate the tank.

  • If you suspect the fuel is contaminated, dispose of it immediately.

If you have reason to believe that the fuel is contaminated with rust, dirt, or other impurities, drain the fuel as soon as possible and have the fuel tank inspected and cleaned if necessary. We also recommend replacing the fuel filter to prevent the impurities caught in the filter to contaminate gas that is stored in the tank in the future.

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  • Tips When Installing a Jeep Wrangler (YJ) Fuel Tank

    There are many reasons to install a new fuel tank in the Jeep Wrangler (YJ) — fuel leaks and upgrading to a bigger capacity fuel tank are among them — but whatever the reason the replacement must be done as soon as possible. As fuel is stored mainly in the fuel tank, it will be next to impossible to drive your Wrangler without one.

    Installation of a new Jeep Wrangler (YJ) fuel tank can be done by a licensed mechanic, but you can also do it yourself if you have the necessary space and tools on hand. And if you are going for the latter, here are some tips that you might find helpful during the process:

    Tip #1: Make sure to drain all of the fuel before starting.

    Draining the fuel beforehand not only makes removing the old fuel tank less messy but also reduces the risk of contaminating the new fuel tank with dirt and rust particles from the old tank. Loosen the end of the fuel line that connects to the gas tank, pull the hose off, and let the fuel drain into a clean, fireproof container. If your tank has a built-in drain valve at the bottom, you can loosen the valve and allow the gas to flow out there.

    Tip #2: Keep yourself safe.

    Keep in mind that gasoline is a highly dangerous, flammable liquid, so make sure that the work area is clear of anything that could cause a spark. This includes parking your car in a well-ventilated area (to reduce the buildup of fumes), disconnecting the battery from its cables, and keeping any heaters, pilot lights, electric devices and sources of open flames at a safe distance.

    Tip #3: Snap a photo of the fuel tank.

    The fuel tank is connected to a dizzying array of clamps, straps, bolts, and fuel lines, and knowing which component goes where can become confusing. So before removing the fuel tank, take a photo of it; you can use it as reference when reconnecting the fasteners and fuel lines later.

    Tip #4: Clean all of the contact surfaces between the tank and the truck.

    Rust, in particular, must be removed to prevent it from spreading onto the fuel tank body and contaminating the fuel inside. Using a wire brush, remove any loose rust particles around the recess where the fuel tank is mounted as well as the metal straps that hold it in place. Make sure to check the ends of the fuel lines for corrosion as well, and clean them accordingly.