Changing Fuel Injectors In A Celica: Step-By-Step Guide

Replacing the fuel injectors in a Toyota Celica can be a complex task and should be left to a professional. The fuel injectors are located on top of the engine and are accessible from the engine compartment. The replacement process involves removing additional engine components, such as the intake manifold, fuel rail, and electrical connectors. It is important to take proper precautions when working with fuel, including disconnecting the battery to prevent sparks. The average cost for a Toyota Celica Fuel Injector replacement is between $1,082 and $1,213, with labour costs estimated between $109 and $137, and parts priced between $973 and $1,076.

Disconnect the fuel pump fuse and battery cable

Disconnecting the fuel pump fuse and battery cable is an important step when replacing fuel injectors in a Toyota Celica. This step is crucial for safety reasons and to ensure a smooth replacement process. Here is a detailed guide on how to do it:

Disconnecting the Fuel Pump Fuse:

• Locate the fuse box: The fuse box in a Toyota Celica is typically located under the dashboard on the driver's side.
• Identify the fuel pump fuse: Open the fuse box and look for the fuel pump fuse. It should be labelled clearly.
• Remove the fuel pump fuse: Using an appropriate tool, carefully remove the fuel pump fuse from the fuse box.

Disconnecting the Battery Cable:

• Locate the battery: The battery is usually located in the engine compartment or in the trunk of the vehicle.
• Identify the negative battery terminal: The negative terminal will be clearly marked, often with a "-" symbol or a black cover.
• Disconnect the cable: Use a socket wrench to loosen the nut or bolt securing the negative battery cable to the terminal. Once loose, carefully detach the cable from the terminal.

By following these steps, you will have successfully disconnected the fuel pump fuse and battery cable in your Toyota Celica, preparing you for the next steps in the fuel injector replacement process. Remember to exercise caution when working with electrical components and always refer to a qualified mechanic or repair manual for specific instructions pertaining to your vehicle's make and model.

Remove the air intake assembly and engine cover

To remove the air intake assembly and engine cover from your Toyota Celica, you will need to follow these steps:

First, relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench. This is an important safety precaution to prevent any accidental sparks during the removal process. Once this is done, you can move on to removing the air intake assembly and engine cover.

Locate the air intake assembly and engine cover. These are usually found on top of the engine, in the engine compartment. You may need to remove other engine components for better access, depending on your specific model of Celica. Use a socket wrench to loosen and remove any bolts or screws securing the air intake assembly and engine cover in place. Be sure to keep track of the order and placement of the bolts or screws removed, as you will need to replace them in the correct order during reassembly.

After removing the air intake assembly and engine cover, set them aside in a safe place. It is a good idea to cover or protect nearby engine components and surfaces to avoid any accidental damage during the fuel injector replacement process.

Now that the air intake assembly and engine cover have been removed, you should be able to access the fuel injectors and fuel delivery pipe. The next steps will involve detaching the fuel tube assembly and removing the fuel injectors, which will be covered in subsequent sections. Remember to refer to a qualified mechanic or repair manual for more detailed instructions and safety precautions specific to your vehicle.

Detach the fuel tube assembly and fuel delivery pipe

To detach the fuel tube assembly and fuel delivery pipe from your Toyota Celica, you will need to first relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench.

Next, remove the air intake assembly and the engine cover. This will grant you access to the fuel tube assembly. Use a socket wrench to detach the fuel tube assembly and lift out the fuel delivery pipe with the injectors still attached.

Now that the fuel delivery pipe is removed, you can proceed to pull the fuel injectors out of the fuel rail and discard the old O-rings. It is important to note that this process may vary slightly depending on the make and model of your Toyota Celica. Ensure that you are working in a well-ventilated area and take the necessary precautions when working with fuel and electrical systems.

Pull out the fuel injectors and discard old O-rings

To pull out the fuel injectors and discard the old O-rings, you will need to follow these steps:

Firstly, relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench. This is an important safety precaution to prevent any accidental sparking during the process. Ensure you take proper precautions against fire when working with fuel. Next, remove the air intake assembly and the engine cover. You can then detach the fuel tube assembly using a socket wrench and lift out the fuel delivery pipe, with the injectors still attached.

Now, carefully pull the fuel injectors out of the fuel rail. Be sure to coat the new O-rings with gasoline before installing them. It is also important to ensure that the new fuel injectors can rotate smoothly in both directions once installed. Once the new O-rings are coated, install them onto the new fuel injectors. After this, you can mount the new fuel injectors into the fuel pipe, twisting them into place so that the electrical connectors face away from the fuel pipe.

Finally, you can complete the installation by reversing the removal process. Start the engine to check for any fuel leaks.

Coat new O-rings with oil or gasoline and install new fuel injectors

To replace the fuel injectors in a Toyota Celica, you will first need to remove the fuel pump fuse from the fuse box under the dashboard. Start the engine and allow it to stall, then crank the engine to ensure the fuel lines are empty before replacing the fuel pump fuse. Disconnect the cable from the negative battery terminal to prevent the battery from generating sparks during the fuel injector replacement.

Now, you can begin to remove the old fuel injectors. Disconnect the cover for the No. 2 cylinder head with a socket wrench. Detach the vacuum hose and fuel tube from the fuel pipe, and disconnect the electrical connectors from the fuel injectors. Next, disconnect the fuel pipe from the fuel injectors and detach the fuel injectors from the engine. Remove the spacers from the cylinder head and pull the fuel injectors away from the fuel pipe, discarding the old O-ring and grommet.

Before installing the new fuel injectors, coat the new O-rings and grommets with light machine oil. Also, coat the mounting surfaces on the fuel pipe and the injector bores in the cylinder head with light machine oil.

Now, you can install the new fuel injectors. Twist the new fuel injectors into the fuel pipe, ensuring that the electrical connectors face away from the fuel pipe. Install the spacers and connect the fuel pipe to the cylinder heads. Tighten the mounting bolts for the fuel pipe to 14 foot-pounds with a torque wrench. Attach the fuel line and the PCV hose to the fuel pipe, and connect the cover for the No. 2 cylinder head, tightening its mounting bolts to 7 foot-pounds. Finally, connect the cable for the negative battery terminal with a socket wrench.

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