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How to Replace a Fuel Injector in a Dodge Ram

by Contributor

The fuel injector in a Dodge Ram mixes fuel with air under pressure and rendered carburetors obsolete during the late 1980s. One advantage of a fuel injector is the programmable firmware that allows the same hardware to work with different fuels. The fuel injector assembly includes only the nozzle and valve; it still requires a pump to deliver fuel into the engine.

Step 1

Determine which fuel injector your Dodge Ram will need. This depends not only on the make and model, but also the engine size. A Dodge Ram made after 2001 may be equipped with a 3.7L, 4.7L, 5.7L Hemi V8, 5.9L Magnum V8, 5.9L Cummins diesel, 6.7L Cummins diesel, 8.0L Magnum or 8.3L Viper engine.

Step 2

Relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench. Disconnect the mounting bolts for the fuel rail with a socket wrench and remove the fuel rail from the engine compartment.

Step 3

Disconnect the retaining clips the hold the fuel injectors to the fuel rail and remove the fuel injectors. Discard the O-rings.

Step 4

Install the new fuel injectors into the fuel rail and apply a small amount of clean engine oil to the new O-rings. Replace the retaining clips to hold the new fuel injectors in place and mount the fuel rail into the engine. Use a socket wrench to tighten the mounting bolts on the fuel rail. Connect the negative battery cable with a socket wrench.

Step 5

Use a socket wrench to tighten the mounting bolts on the fuel rail. Connect the negative battery cable with a socket wrench.

Start the engine and check for fuel leaks.

Items you will need

  • Fuel injector kit
  • Pliers
  • Socket wrench set

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