How To Replace A Fuel Injector

The fuel injector is essential to keep your engine running efficiently and effectively. Like any aspect of your vehicle, your fuel injectors can wear or become clogged over time. Other minor issues can crop up, like fuel injector connectors or retaining clips failing, but you will be able to identify these issues as you pull the injectors. A clogged or worn injector can lower fuel economy, cause engine misfires or even leave your vehicle completely inoperable.

Most times, fuel injectors will wear slowly over time and give you plenty of warning that they are having issues. If you think your injectors have operational problems, check out this blog post to learn more about identifying the issue.

Before Replacing Your Ford Fuel Injectors

Disconnect ford battery

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When working with fuel systems or fuel itself, you should be aware of fire risks, and be sure to depressurize your fuel system by loosening your gas cap. Likewise, the injectors also have electrical wiring that you'll work on throughout the removal. It is best to disconnect the battery before you begin. Lastly, be sure you've got your OEM replacement parts at the ready - learn more about why we recommend using OEM fuel injectors here.

Fuel Injector Replacement Process

Ford fuel fail

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You'll find the fuel injectors injectors located at the top of the engine. They nestle into the intake manifold - look for a small plastic unit with connections to both the fuel rail and electrical wiring. There will be one fuel injector for each cylinder. To replace the injectors:

  • Disconnect the fuel line at the primary end of the fuel rail. The fuel rail runs fuel to each injector. 
  • If your engine doesn't utilize a fuel rail, disconnect the fuel lines from each fuel injector.
  • Now that the fuel lines or fuel rail are out of the way, carefully identify the control wire going into your injector. You can carefully remove this wire, careful not to strip or sheer the wire.
  • If there is a buildup of dirt around the injector, use compressed air to remove it. 
  • Once the fuel rail or fuel lines are clear of the injectors, you should use a fuel injector puller to pull the injectors carefully. Ensure that nothing gets into the injector system if your injectors are removed. Debris or other objects in the injector system can cause much more significant issues.
  • At this point, you can review the individual injector and determine if it needs a fuel injector cleaning or a total fuel injector replacement.
  • Continue to pull the injectors one by one. 
  • One injector may show signs of wear while another does not. We always recommend replacing all the injectors to ensure that your engine has consistent fuel flow and proper spark throughout each cylinder.
  • To install the new injectors, reverse the process. 

If you're having issues with your fuel system or fuel injectors, look no further than Blue Springs Ford Parts. We have been in business for over 30 years selling OEM Ford and Lincoln parts. We are one of the biggest Ford parts departments in the US, and with our central location in Missouri, you can be sure your parts will arrive quickly.