Replacing Fuel Injectors In Toyota Celica: Step-By-Step Guide

Fuel injectors are an essential component of a car's fuel system, responsible for delivering fuel so that the car can be driven safely. When a fuel injector fails or clogs, it can cause issues with engine power and even cause the engine to stall. This can be a hazard and impact the performance of your Toyota Celica. Luckily, replacing fuel injectors is a straightforward process and there are a variety of options available for purchase. This article will provide a step-by-step guide on how to replace fuel injectors in a Toyota Celica, as well as offer insights into the costs and benefits of doing so.

Disconnect the injector connectors

Disconnecting the injector connectors is a crucial step in replacing the fuel injectors of a Toyota Celica. This step requires careful attention to detail and a methodical approach to ensure a successful outcome. Here is a comprehensive guide on how to disconnect the injector connectors:

Before beginning, ensure you have gathered the necessary tools and refer to the Toyota Celica repair manual volume 2, pages 161-168, for a comprehensive overview of the process. It is important to work methodically and carefully when disconnecting the injector connectors to avoid any damage to the vehicle's engine.

Firstly, locate the injector connectors. They are usually found near the fuel injectors and the delivery pipe. Once located, proceed to carefully disconnect each of the four injector connectors. It is important to do this one at a time to avoid any confusion during the reassembly process. Label or mark each connector and its corresponding injector to ensure proper reconnection.

After disconnecting the connectors, set them aside in a safe place to avoid misplacing them. Ensure that the connectors are not exposed to any dirt or debris, as this could cause issues when reconnecting them. Additionally, it is good practice to inspect the connectors for any signs of damage or wear and replace them if necessary.

Next, refer to the repair manual for the specific steps required to remove the delivery pipe and the fuel injectors. This process may vary depending on the model of your Toyota Celica. It typically involves removing the bolts on the delivery pipe and carefully pulling out the delivery pipe and fuel injectors. Take note of the order and orientation of the components for easier reassembly.

By following these steps, you will successfully disconnect the injector connectors of your Toyota Celica, paving the way for the next steps in the fuel injector replacement process. Remember to work carefully and refer to the repair manual for detailed instructions specific to your vehicle's make and model.

Remove bolts on the delivery pipe

To remove the bolts on the delivery pipe of a Toyota Celica, you will need to remove the cylinder head cover using four 10 mm hex allen keys. Next, disconnect the four injector connectors and remove the bolts on the delivery pipe, which are two 12 mm bolts and a 10 mm bracket bolt. After that, pull out the delivery pipe along with the four injectors and the fuel pipe. You can then proceed to remove the four fuel injectors from the delivery pipe.

Pull out the delivery pipe

To pull out the delivery pipe, you will first need to remove the bolts on the delivery pipe. There are two 12mm bolts and one 10mm bracket bolt. Once these are removed, you can pull out the delivery pipe, which should come out with four injectors and the fuel pipe.

Next, pull out the four fuel injectors from the delivery pipe. You can do this by hand or with a tool, such as a pair of needle-nose pliers. Be careful not to damage the injectors or the delivery pipe during this step.

Now that the injectors are out, you can move on to preparing the new injectors for installation. Apply a light coat of oil or gas to the O-ring and the delivery pipe holes for the O-rings. This will help create a seal and prevent leaks.

After the injectors have been prepared, it's time to install them into the delivery pipe. This step can be tricky, as you need to ensure that the injectors are properly seated and rotated correctly. Turn each injector clockwise and counterclockwise while pushing them into the delivery pipe. The connectors should be facing outward.

Once all the injectors are in place, you can move on to reinstalling the delivery pipe back into the vehicle.

Remove the fuel injectors

To remove the fuel injectors from a Toyota Celica, first remove the cylinder head cover. Then, disconnect the four injector connectors and remove the bolts on the delivery pipe (2x12mm + 10mm bracket). Pull out the delivery pipe with the four injectors and the fuel pipe. Next, pull out the four fuel injectors from the delivery pipe.

At this point, you can apply a light oil or gas to the O-ring and the delivery pipe holes for the O-rings. Then, turn the injectors clockwise and counter-clockwise and push them into the delivery pipe, with the connectors outward. Apply gasoline or octane-boosting fluid to the injector grommets or the injector holes in the cylinder head. Place the delivery pipe and fuel pipe with the four injectors into the cylinder head.

Now, temporarily install the three bolts holding the delivery pipe and fuel hose. Check the injectors to ensure they rotate freely, adjusting if necessary. Finally, tighten the bolts and insert the connectors on the injectors.

Install the new injectors

To install the new injectors, follow these steps:

Firstly, apply some light oil or gas to the O-ring and the delivery pipe holes for the O-rings. Next, turn the injectors clockwise and counterclockwise and push them into the delivery pipe, with the connectors outward. Then, apply some gasoline or octane-boosting fluid to the injector grommets or the injector holes in the cylinder head.

Afterward, place the delivery pipe and fuel pipe with the injectors into the cylinder head. Temporarily install the three bolts holding the delivery pipe and fuel hose. Check the injectors to ensure they rotate freely, and adjust if necessary.

Now, tighten the two 12mm delivery pipe bolts to 21 ft-lbs of torque. Then, tighten the 10mm bracket bolt that attaches the fuel pipe to the cylinder head to 7 ft-lbs of torque. Insert the connectors on the injectors.

Finally, start the engine and check the injectors for any leaks. If there are no leaks, install the cylinder head cover using the four 10mm allen bolts.

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