Replacing The Fuel Pump In Your G35: Step-By-Step Guide

Replacing the fuel pump on an Infiniti G35 can be a complex task and is recommended only for those with experience in auto repair. The fuel pump is responsible for delivering gas from the fuel tank to the fuel injectors, and issues with the pump can cause a loss of engine power or even prevent the car from starting. When replacing the pump, it is important to first disconnect the battery to reduce the risk of fire, and then remove the access cover to reach the pump. The pump can be located either inside or outside the fuel tank. If the pump is inside the tank, fuel may need to be drained before accessing the pump. Once the pump is accessed, the fuel lines can be disconnected, and the new pump can be installed. The average cost for an Infiniti G35 fuel pump replacement ranges from $1,685 to $1,816, with labour costs estimated between $79 and $100.

How to replace the fuel pump in an Infiniti G35

Disconnecting the battery

To begin, locate the battery in the engine bay of your G35. It is typically located near the front of the vehicle, on the side, or in a corner. Once you have located the battery, identify the negative terminal, which is usually marked with a "-" symbol or a black cover. This is the terminal that you will disconnect.

Make sure you have the necessary tools, such as a wrench or socket that fits the battery terminal bolt securely. You may also want to wear gloves and eye protection for safety. Before you begin, ensure that the car is turned off and that you have removed the key from the ignition. If your G35 has a keyless ignition, follow the instructions in your owner's manual to put the vehicle in "accessory" or "off" mode.

Once you are ready, use your wrench or socket to loosen the negative terminal bolt. You may need to break the terminal loose by gently rocking the wrench back and forth if it has not been removed in a while. Be careful not to let the wrench touch any other metal parts of the car, as this could cause a short circuit. Once the bolt is loose, remove the cable from the battery terminal.

Properly dispose of or recycle the old battery if you are replacing it with a new one. If you are just disconnecting the battery as part of the fuel pump replacement, ensure that it is securely mounted and will not move around while you are working on the fuel pump.

Removing the access cover

To remove the access cover of your Infiniti G35, you will first need to disconnect the battery to reduce the chance of a fire. This is an important safety precaution when working with the fuel system.

Next, locate the access cover. If the fuel pump is inside the fuel tank, you will need to remove this cover to access the pump. In some cases, you may need to drain the fuel before removing the access panel. This will allow you to access the pump and pre-pump filter screen.

Once the cover is located, use the appropriate tools to carefully remove it. Be cautious not to damage any surrounding components. It is also important to take precautions to prevent any fuel leakage during this process. Make sure to have a suitable container or pan ready to catch any fuel that may spill.

After removing the access cover, you will be able to see the fuel pump and begin the process of replacing it. Remember to refer to a qualified mechanic or repair manual for specific instructions on your vehicle's fuel pump replacement procedure.

When working with the fuel system, always exercise extreme caution and follow safety protocols to prevent fires or other hazards.

Replacing the pump

The fuel pump is responsible for delivering gas from the fuel tank to the fuel injectors. The pump is usually located inside the fuel tank, but can also be found outside it. To replace the fuel pump, start by disconnecting the battery to reduce the chance of a fire.

If the pump is inside the fuel tank, remove the access cover. In some cases, you will need to drain the fuel before removing the access panel. Once the cover is off, replace the pump and pre-pump filter screen. If the pump is outside the tank, disconnect the fuel lines and remove the pump. Install the new pump and reconnect the fuel lines.

When the new pump is in place, check for fuel leaks and ensure the problem is solved. It is recommended that the fuel filters are replaced at the same time as the fuel pump. Additionally, on some vehicles, the fuel pump relay is known to fail, so it is good practice to replace the relay when the pump is replaced.

After the repair, be on the lookout for fuel leaks or odors. If you notice any gasoline, do not start or drive the car, and do not park inside a structure. Have the car towed to a shop for inspection and repair.

Attaching fuel hoses

Attaching the fuel hoses is a crucial step in replacing the fuel pump in your G35. Here's a detailed guide on how to do it:

Before you begin, ensure you have the correct replacement parts, including the fuel hoses and fuel hose clamps. It's important to buy the right size hoses for your G35, and you can find the appropriate ones by specifying your vehicle's make, model, and year when purchasing.

Now, let's get started with the process:

• Remove the Old Fuel Hoses: First, locate the fuel pump and the fuel hoses attached to it. Place a catch pan or a towel underneath to catch any leaking fuel. Using a screwdriver or a wrench, loosen the hose clamps until they slide back and forth. Carefully remove the old fuel hoses from the pump.
• Prepare the New Fuel Hoses: Take your new fuel hose and slide the new hose clamps over it. Ensure that the clamps are loose at this point. Check the fit of the new hose by sliding the open ends into place. Ensure that the hose is not too long or too short, and there are no kinks or bends that could restrict fuel flow.
• Attach the New Fuel Hoses: Once you're satisfied with the fit, tighten the hose clamps with your screwdriver until the new fuel hose is firmly in place. Make sure the hardware is facing you for easy access during tightening.
• Reconnect and Test: After attaching the new fuel hose, reconnect the negative terminal on your car's battery. Then, pressurize the fuel system by returning the fuel pump fuse in your car's fuse box. Finally, start the engine. It may take a few seconds for the fuel to flow through the system. Inspect your work for any fuel leaks. If you find a leak, shut off the engine and repair it immediately, following the necessary safety precautions.

Remember to work in a well-ventilated area, wear appropriate protective gear, and have a fire extinguisher nearby when working with gasoline. Additionally, always refer to your vehicle's service manual for specific instructions and safety precautions.

Checking for leaks

When replacing the fuel pump on an Infiniti G35, it is important to check for leaks to prevent fuel loss and potential safety hazards. Here is a detailed guide on checking for leaks:

Before beginning any work on your G35's fuel system, it is essential to create a safe working environment. Fuel leaks can be dangerous, so ensure the area is well-ventilated, and keep any sources of ignition away from the vehicle. Place the vehicle in park and engage the parking brake. Wear safety goggles and gloves to protect your eyes and hands.

To check for leaks, start by locating the fuel pump and fuel lines. The fuel pump is typically located inside the fuel tank, so you may need to raise the vehicle and safely support it on jack stands to access the tank from the underside. Once you have located the fuel pump and lines, inspect them for any signs of leakage or damage. Look for wet spots, drips, or puddles of fuel, as well as cracks or damage to the lines and connections.

If you have recently replaced the fuel pump, ensure that the fuel hoses are securely attached to the new pump. In some cases, you may need to replace the O-rings or bolts to prevent leaks. Check that the hoses are connected correctly and are not damaged or cracked. Inspect the pump itself for any signs of damage or wear.

If you suspect a fuel leak, it is important to address it immediately. Clean the area around the suspected leak to ensure that any fuel residue is removed. Use a suitable absorbent material, such as rags or paper towels, to soak up any spilled fuel. Dispose of the absorbent material properly, following local regulations for hazardous waste disposal. Do not attempt to repair a leaking fuel pump; instead, replace it with a new one, following the installation instructions carefully.

To ensure the safety of your vehicle and those around you, it is crucial to address any fuel leaks promptly and to perform regular inspections of your G35's fuel system. By following these steps and staying vigilant, you can help maintain the proper functioning of your vehicle's fuel system and ensure your safety on the road.

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