Disconnect the negative battery terminal
Relieve fuel system pressure
Remove the engine cover if equipped
Disconnect the air intake components if they block access
Unplug the electrical connectors from the fuel injectors
Remove the fuel rail retaining bolts
Carefully lift the fuel rail with the injectors attached
Remove the injector retaining clips or fasteners
Pull the old injectors out of the fuel rail
Remove and replace the injector O-rings and seals
Lubricate the new O-rings with clean engine oil
Install the new injectors into the fuel rail
Reinstall the retaining clips or fasteners
Position the fuel rail and injectors back into place
Press the injectors fully into the intake manifold or cylinder head
Reinstall the fuel rail bolts and tighten to specification
Reconnect the injector electrical connectors
Reinstall any removed intake components and engine covers
Reconnect the negative battery terminal
Turn the ignition on and check for fuel leaks
Start the engine and verify proper operation