How To Replace A Fuel Injector

Replacing a plugged or dirty fuel injector in any vehicle can address many common operational problems including slow throttle response, stuttering, or rough idle. By replacing the fuel injectors yourself, you can save time and money.

Begin by taking a picture of the overall assembled engine. Locate the injector railing. Remove anything that is between you and the railing such as wires, mounts, hoses, and the air intake system.

Next, locate the bolts and screws that hold the fuel injector retaining rail in its place and remove them. Gain access to your fuel injector by pulling out the rail. Keep in mind that not all makes or models have a retaining rail.

Put on some safety goggles, and then proceed with the repair by pulling out the first fuel injector. It is important to wear goggles because the pressure inside of the fuel system may cause some of the gasoline to squirt out. Some fuel injectors are snug fitting and may require the use of a special tool for removal. These tools can be purchased at local auto parts outlets or auto dealerships.

Inspect the old fuel injector, making sure that none of the old seal is stuck down in the seat. If any remnants are found, remove them with a small screwdriver or pick. Prepare a new fuel injector, remove any caps, and lubricate the seat using a small drop of motor oil. Place the new injector on a clean rag near the fuel line.

Pay careful attention to any recommended torque values, then attach the new injector to the vehicle. Reassemble the retaining rail, and replace any related bolts. Put the hoses, wires, or other parts back on. Make sure to clean off any grease or oil as you reassemble these parts.

Finally, start up your vehicle. Allow the vehicle to idle for a few minutes, then check under the hood for any leaks or signs of malfunction. Take the vehicle for a short test drive to see if the power and performance has been restored.

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