Replacing The Fuel Pump In Your Classic '57 Chevy

If you're looking to change the fuel pump in your 1957 Chevy, you've come to the right place. This process can be done in a number of ways, depending on the model of your Chevy and your personal preference.

Firstly, you'll need to decide whether you want to remove the mechanical pump entirely or leave it in place as a backup. If you opt for the latter, you'll install an electric fuel pump by the tank. If you choose to remove the mechanical pump, you'll replace it with an electric one.

Before you begin, make sure you have the right equipment, including an electric fuel pump that fits your Chevy's make and model, a block-off plate gasket and sealer, a mount for the electric fuel pump, and a universal wiring kit if you want to rewire your car.

Now, you're ready to get started! Begin by uninstalling the mechanical fuel pump and covering the hole with a block-off plate gasket and sealer. Then, mount the electric fuel pump near the gas tank and connect it to the fuel line. Don't forget to install a filter next to the electric fuel pump and wire it to the ignition switch.

A few things to keep in mind: ensure the electric pump is installed close to the gas tank, keep the pump and fuel line away from heat sources, and mount the pump in a low, open area to avoid pressure on the fuel lines and reduce the risk of a fuel leak or fire.

Good luck, and happy Chevy-ing!

Remove the old fuel pump

Removing the Old Fuel Pump from a '57 Chevy

Before starting this process, ensure you have the necessary tools and a suitable workspace. Safety should always be a priority when working on your Chevy, so wear protective gear and ensure the vehicle is securely parked and cannot be moved accidentally. Now, let's guide you through the steps to remove the old fuel pump:

First, locate the fuel pump. In your '57 Chevy, it should be mounted on the engine, often near the firewall, and connected to the fuel lines. Once located, the next step is to relieve the fuel system pressure. This is an important safety precaution to prevent any accidental spillage or injury. You can do this by disconnecting the negative battery cable first, then, following the fuel line from the pump to the carburetor, you will find the fuel line shut-off valve. Close this valve to prevent any further fuel flow to the pump. Now, you can safely relieve the pressure in the system by slowly opening the valve again, allowing any residual pressure to be released.

With the pressure relieved, you can now disconnect the fuel lines from the pump. Place a rag or towel around the connection points to catch any residual fuel. You will need a suitable wrench to loosen and remove the fittings that secure the fuel lines to the pump. Be careful not to damage the threads on these fittings, and ensure that you have a secure grip to avoid any slipping. Once the fuel lines are disconnected, you can move on to disconnecting the electrical connections to the pump.

Locate the electrical connector that powers the fuel pump. This is usually a simple plug-and-socket connection. Depress the locking tab on the connector and gently pull the connector apart. If your Chevy has been fitted with any additional clips or fasteners to secure the wiring, make sure to release these carefully to avoid any damage to the wiring harness. With the electrical connections now disconnected, the final step is to remove the mounting bolts that secure the pump to the engine.

Using the correct size socket or wrench, carefully loosen and remove these bolts. Depending on your Chevy's configuration, there may be one or more bolts holding the pump in place. With the bolts removed, you should now be able to carefully lift and remove the old fuel pump from its mounting position. Take care not to damage any surrounding components or wiring as you do so. With the old pump removed, you are now ready to install the new fuel pump. Ensure you have a suitable replacement and follow the installation instructions carefully.

Remember to exercise caution and follow safety protocols throughout the process. Working on fuel systems can be hazardous, so take your time and ensure a careful and precise job. Always refer to a qualified mechanic or specialist if you are unsure about any steps or procedures.

Grease the push rod

To grease the push rod when changing the fuel pump in a '57 Chevy, follow these detailed steps for a successful and smooth process:

Begin by locating the push rod; it is attached to the fuel pump and plays a vital role in activating the pump's mechanism. Clean the area around the push rod to ensure no dirt or debris can enter the mechanism and potentially cause damage or hinder performance. Use a clean rag to wipe down the surrounding area and ensure it is free of any grease or grime build-up. Acquire a suitable grease type for this application. A high-quality, automotive-grade lithium grease is recommended. Ensure it is compatible with rubber components and will not cause corrosion or damage to metal parts.

Apply a generous amount of grease to the base of the push rod, where it connects to the fuel pump. Work the grease into the mechanism with your fingers or a small brush to ensure it coats all the moving parts and penetrates the crevices. This will lubricate the components and protect them from wear and tear. Also, grease the entire length of the push rod, paying particular attention to any joints or pivot points. Ensure a thin, even coating is applied to all surfaces, as this will help reduce friction and ensure the smooth operation of the rod when activating the fuel pump.

The final step is to reassemble the components, ensuring that any linkages or connections are secure and correctly aligned. This process requires care and attention to detail to avoid damaging any greased components and to ensure the push rod functions optimally when the fuel pump is activated. By adequately greasing the push rod, you'll ensure the longevity of the fuel pump and maintain the efficiency of your '57 Chevy's engine.

This detailed procedure ensures the push rod is adequately lubricated and protected, which is essential for the reliable operation of your classic car's fuel system.

Install the new pump and plate

To install the new pump and plate, you will need to first ensure that the engine is on top dead centre (TDC) at 0 on the timing mark for cylinder #1 firing, as this will ensure the fuel pump push rod is at its most relaxed position, meaning there is the least pressure on the pump lever. Next, remove the two small bolts or screws and pop off the plate, pulling the rod out and cleaning it before putting some grease on the rod and pushing it back in as far as it will go.

Now, you can install the new plate with a new gasket and then install the new pump. To make this process easier, you can apply some grease to the gasket to help hold it in place while you get the pump in position. You can also use a hacksaw blade to hold the rod in place while you slide the pump in.

When installing the new pump, be sure to check the thickness of the mount and compare it to the old pump. If the new pump mount is thicker, you may struggle to start the bolts. You can also use longer bolts to pull the pump in closer and then replace them with shorter bolts one at a time.

Finally, when tightening the bolts, be careful not to overtighten, as this could bend the rod.

Disconnect the gas line behind the seat

Disconnecting the gas line behind the seat of a 1957 Chevy is a crucial step in changing the fuel pump. Here is a detailed, step-by-step guide to help you through the process:

Firstly, locate the gas line coupling behind the seat, which is usually right above the fuel tank. This coupling provides a convenient point to disconnect the gas line. Before you begin, it is important to relieve any pressure in the tank by opening the gas cap. This simple step can make a significant difference in preventing spills and ensuring a safer work environment.

Now, you can proceed to uncouple the gas line. Place a container or a rag underneath the coupling to catch any fuel that might spill. Using suitable tools, carefully loosen the coupling until you can separate the two halves of the gas line. It is normal for a small amount of fuel to spill, so be prepared to manage this safely. Once the coupling is disconnected, you may need to use a clamp to secure the end of the gas line to prevent further leakage.

At this point, you have successfully disconnected the gas line behind the seat. You can now focus on the next steps in changing the fuel pump. Remember to work cautiously and refer to appropriate resources for further guidance if needed.

Safety should always be a priority when working on your Chevy. Ensure you have adequate ventilation and take the necessary precautions to avoid any potential hazards associated with fuel and electrical systems.

Install a filter next to the new fuel pump

Installing a fuel filter next to a new fuel pump in a 1957 Chevy is a complex task that requires careful attention to detail. Here is a step-by-step guide to help you through the process:

• Prepare the Vehicle: Before beginning any work, ensure you have the necessary tools and a suitable workspace. Place a bowl or bucket under the fuel filter to catch any fuel spillage. For easier access to the fuel filter, you may need to jack up the car and place it on jack stands. Always prioritize safety and refer to a professional mechanic if you are unsure about any steps.
• Locate the Fuel Filter: The fuel filter in a 1957 Chevy is typically found along the fuel line on the bottom of the car, just past the fuel pump. Refer to your vehicle's service manual or seek advice from a qualified mechanic if you are unsure about the exact location.
• Disconnect the Battery: Disconnect the negative terminal of the battery to prevent the engine from starting during the fuel filter installation process.
• Remove the Old Fuel Filter: Use a flat-head screwdriver to pop out the plastic clips holding the fuel filter in place. Be cautious, as these clips are fragile and prone to breakage. Remove the fuel lines from the filter by sliding them away from the nozzles on both ends. Catch any spilled fuel with the bucket or bowl placed earlier.
• Install the New Fuel Filter: Compare the new fuel filter with the old one to ensure they have the same dimensions and nozzle sizes. Slide the new fuel filter into the bracket, ensuring it is securely seated. Reattach the fuel lines to the new filter and secure them with the plastic clips.
• Lower the Vehicle: Once the new fuel filter is installed, lower the vehicle from the jack stands and reconnect the battery.
• Test the Vehicle: After completing the installation, start the engine and check for any fuel leaks or unusual noises. Refer to your vehicle's service manual for specific guidelines on testing and troubleshooting.

It is important to note that this guide provides a general overview of the process. Always refer to your vehicle's service manual or seek advice from a qualified mechanic for detailed instructions specific to your 1957 Chevy model.

Frequently asked questions