Replacing The Fuel Pump In A Crx: Step-By-Step Guide

Replacing the fuel pump in a Honda CRX is a relatively common procedure, with many forum users discussing the process. The fuel pump is located inside the tank, and while some sources suggest that it is necessary to drop the tank to access the pump, others claim that it can be reached through an access panel. The process involves jacking up the car, removing the rear wheel, disconnecting wires and hoses, and loosening the tank straps. It is important to ensure that the new pump is compatible with the car's specifications and to be cautious of fuel leaks and fumes during the process.

Drop the gas tank

Dropping the gas tank is a necessary step in replacing the fuel pump of a Honda CRX. Here is a detailed, step-by-step guide on how to do it:

Firstly, make sure your car is on a level surface and engage the parking brake. Loosen the gas cap to release the pressure in the tank. Then, jack up the rear of the car and secure it on jack stands. Place a jack under the tank for support, but do not press up on the tank with the jack. Use wood or another sturdy material to prevent the jack from ripping a hole in the tank. Remove the left dust shield, which is usually held on by four 12mm bolts.

Next, use a 12mm wrench to loosen the tank straps. Slowly lower the tank, being careful not to rip any fuel lines. Disconnect the fuel return line and the fuel pump pigtail in the access compartment behind the front seats. You will also need to remove the filler-neck/vent tube cover. At this point, you should be able to see where the hoses are holding up the tank from the filler tubes.

Once the tank is partially lowered, you will see a circular mount with two metal fuel lines and six bolts at the end of the fuel tank. This is the support bracket for the fuel pump. Use a 19mm socket to remove the main bolt for the fuel pump line and a 17mm wrench to undo the banjo bolt. Undo the six bolts and slowly pull out the fuel pump mount at an angle.

Now that the tank is lowered and the fuel pump mount is accessible, you can begin the process of removing and replacing the fuel pump. This part of the process will involve removing and reconnecting various hoses, wires, and bolts, so it is important to be careful and methodical. It is also crucial to work in a well-ventilated area, as fuel fumes can be dangerous.

Finally, when you have finished replacing the fuel pump, simply reverse the steps to raise the gas tank back into place and secure it with the tank straps.

Disconnect the battery

Disconnecting the battery is an important step when changing the fuel pump on a Honda CRX. It is the first step to ensuring your safety and reducing the risk of fire. Here is a detailed, step-by-step guide on how to disconnect the battery when changing the fuel pump on your CRX:

First, locate the battery. It is usually found in the engine bay, often near the front of the car, or in the boot or trunk. Once you have located the battery, identify the negative and positive terminals. The negative terminal will be marked with a minus sign, and the positive terminal with a plus sign. You will also need to ensure you have the correct tools for the job. You will require a wrench or socket set to loosen the battery terminals.

Next, you will need to loosen the nut on the negative terminal, which is usually black, using your wrench. Be sure to loosen it enough so that you can remove the cable from the terminal. Do not allow the wrench to touch any other metal parts of the car, as this could result in an electrical short. Once the cable is removed, carefully move it away from the battery. Now, repeat this process for the positive terminal, which is usually red. Again, ensure the wrench does not touch any other metal parts of the car.

With both cables now disconnected from the battery, you can safely proceed with changing the fuel pump. It is important to note that you should never connect or disconnect the positive cable first, as this could result in an electrical short, which may cause damage to your car's electrical systems, or even a fire. Always disconnect the negative cable first, and connect it last when reinstalling the battery.

Remove the rear wheel

To remove the rear wheel of your Honda CRX when replacing the fuel pump, follow these steps:

First, jack up the rear of the car and secure it on jack stands. Remove the left rear wheel. You will need to access the area behind the wheel, so it is important to ensure that the car is securely lifted and supported before proceeding.

Next, locate and remove the dust shield on the left side of the car. It is typically held on by four 12mm bolts. Once removed, this will expose the area behind the wheel well and allow you to access the fuel tank and other components.

Loosen the tank straps using a 12mm wrench. The tank straps hold the fuel tank in place, so loosening them will allow you to drop the tank down and access the fuel pump for removal and replacement.

At this point, you should be able to slowly drop the fuel tank down. You may need to disconnect some hoses or lines that are holding up the tank from the filler tubes. Be careful not to kink or damage any fuel lines during this process, as it can cause fuel leaks.

Once the tank is lowered, you will have access to the fuel pump assembly and can begin the process of removing and replacing the fuel pump. Remember to work in a well-ventilated area when performing these tasks, as fuel fumes can be dangerous.

Disconnect fuel lines and wires

Disconnecting the fuel lines and wires is a crucial step in changing the fuel pump of a Honda CRX. Here is a detailed guide on how to do it:

Firstly, make sure to empty the fuel tank. This step is important for safety and to avoid spilling fuel when you are working. You can do this by using the drain plug. Once the tank is empty, disconnect the battery terminals. This is an important safety precaution as it will prevent any accidental sparking.

Next, you will need to jack up the car and secure it on jack stands. Make sure the car is securely lifted and will not shift or move during the process. Now, locate the fuel tank straps and use a 12mm socket to loosen and remove them. Slowly lower the fuel tank, being careful not to rip any fuel lines.

Once the tank is lowered, you will need to disconnect the fuel lines and wires. There should be a fuel return line and a fuel pump pigtail that you will need to disconnect. You may also need to remove the filler-neck/vent tube cover to access the fuel lines. Be very careful not to damage or kink any of the fuel lines, as this can cause issues with fuel flow later.

After the fuel lines are disconnected, you will need to remove the bolts securing the fuel pump assembly. There should be six or eight 10mm bolts holding the assembly in place. Once these bolts are removed, you can slowly pull out the fuel pump assembly. Be careful not to damage any of the wires or connectors during this process.

Now, you can remove the old fuel pump from the assembly and install the new one. Make sure to handle the new fuel pump with care and keep it dirt-free. Reattach any wires or connectors to the new fuel pump and secure it back into the assembly.

Finally, you can begin the reassembly process by reversing the steps. Reattach the fuel lines, secure the fuel tank with the straps, and lower the car from the jack stands. Remember to always work in a well-ventilated area when working with fuel and be cautious of any fuel fumes.

Remove the old pump and replace

To remove the old pump and replace it with a new one, you will need to first empty the tank as you will have to drop it. You can do this by pushing your car onto ramps and loosening the tank straps. Once the tank is partway off, you will see a circular mount with two metal fuel lines and six bolts at the furthest end of the fuel tank. This is the support bracket for the fuel pump.

Using a 19 mm socket, take off the main bolt for the fuel pump line, and then use a 17 mm wrench to undo the banjo bolt. Undo the six bolts and begin to pull out the fuel pump mount. As you do this, tilt the mount at an angle and pull it out slowly.

Now, replace the pump and filter strainer. Make sure to do this in a well-ventilated area, as fuel fumes are dangerous and can cause headaches and are a fire hazard. You may also want to replace the wiring to your fuel pump while you are in there, as well as upgrade to a higher LPH fuel pump.

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