Replacing The Fuel Pump In A Jaguar Xj8

Replacing the fuel pump in a Jaguar XJ8 is a complex task that requires mechanical expertise and specialised tools. The process involves removing interior panels, disconnecting fuel lines, and working in tight spaces with potentially dangerous fuels. It is recommended that you consult a qualified mechanic or seek out a detailed, step-by-step guide before attempting this procedure yourself.

Disconnecting the fuel lines from the bottom of the tank

Before attempting to remove the fuel tank, it is crucial to first remove the fuel lines from underneath the vehicle. There are two quick-disconnect fittings for the lines, and special tools are available to assist with this process. It is also recommended to spray the ports for the lines with a penetrating oil, such as PB Blaster, to prevent rust.

Once the fuel lines are disconnected, the tank retaining cover can be removed using the bolts on the top and bottom. With the tank cover removed, the gas cap can be removed to drain the tank. Once drained, the screws at the filler can be removed, and the rubber pushed back into the trunk.

On the inside of the trunk, the tank filler latch can be removed by holding the latch inside and turning the nut about a quarter turn. At this point, the two drain hoses can be disconnected.

Now, the hard part is removing the extraction tool for the two lines going into the tank from under the car. This step can be challenging due to the tight space and the sharp edges on the tank. It is recommended to use a car lift if possible and to be cautious of the nearby wiring. A screwdriver can be used to push the tool into place, and a string can be attached to the tool to prevent loss if it is dropped.

After the extraction tool is in place, the lines can be pushed in and pulled back to remove them from the ports. It is important to be gentle during this process to avoid damaging the lines.

With the fuel lines successfully disconnected, the next step is to remove the tank and access the fuel pump for replacement.

Removing the tank retaining cover

With the tank cover removed, you will need to remove the tank retaining cover. You will find three bolts on top and two bolts at the bottom. When putting the tank retaining cover back on, it is recommended that you put the two bottom bolts in first, followed by the three bolts on top.

To remove the gas cap and drain the tank, wait until you have less than a quarter of a tank of fuel. Once drained, remove the three screws at the filler and push the rubber back into the trunk.

Draining the tank

To drain the tank of your 2000 Jaguar XJ8, first lower the two windows and open the trunk. Disconnect the battery. Remove the interior panels, starting with the shelf, then the tank cover, and then the two sides. Remove the tire and battery. With the tank cover removed, you will need to remove the tank retaining cover. You will find three bolts on top and two bolts on the bottom.

Next, remove your gas cap and drain your tank. Once you have less than a quarter of a tank of fuel, remove the three screws at the filler and push the rubber back into the trunk. On the inside, remove the tank filler latch. To do this, hold the latch inside the trunk and on the outside, turn the nut about a quarter of a turn and it will come out. It is a bayonet-type connection. Once that is removed, disconnect the two drain hoses.

Disconnecting the tank filler latch

Firstly, locate the tank filler latch inside the trunk of your Jaguar XJ8. This is usually found near the fuel tank and can be identified as a small, metal latch. Once you have located the latch, you will need to hold it firmly in place.

Now, on the outside of the vehicle, find the nut that secures the latch. This is typically located just above or below the latch, depending on your Jaguar model. Using a suitable tool, turn this nut counterclockwise by about a quarter of a turn. This will loosen the connection and allow you to remove the latch.

It is important to note that the connection is a bayonet-style attachment, so be gentle and careful when turning the nut to avoid any damage. Once the nut is loosened, you can carefully pull the latch out.

At this point, the tank filler latch should be successfully disconnected. You can now proceed to the next steps in changing the fuel pump, such as disconnecting the drain hoses and removing the fuel tank itself. Remember always to refer to a trusted repair manual or seek professional assistance if you are unsure about any part of the process.

Removing the roof drain lines

To remove the roof drain lines, you will first need to open the trunk and lower the two windows. Then, remove the shelf, the tank cover, and the two sides. Next, remove the tire and battery. With the tank cover removed, you will need to take off the tank retaining cover. There are three bolts on top and two bolts at the bottom.

Once you have removed the retaining cover, you can proceed to drain the gas tank. It is recommended to do this when the tank is less than a quarter full. After draining the tank, remove the three screws at the filler and push the rubber back into the trunk.

Now, you will need to disconnect the two drain hoses. These are located to the right of the tank, next to the plug for the pump and float. Simply remove the plug and pull down on the roof drain lines to disconnect them from the canister pipe tabs.

At this point, you will have successfully removed the roof drain lines. You can now proceed to the next steps of replacing the fuel pump, which involve removing the fuel lines and the gas tank.

Frequently asked questions