Direct Injection Fuel Rail RH: Installation

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Note the correct orientation of the fuel injector support rings, to insure the correct installation of the new fuel injector support rings.
- Remove and discard the fuel injector O-rings.
- Remove and discard the fuel injector support rings.
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NOTE: Use care when removing the lower Teflon® seals, not to scratch, nick or gouge the fuel injector.

NOTE: Do not attempt to cut the lower Teflon® seal without first pulling it away from the fuel injector or damage to the injector may occur.
1. Pull the lower Teflon® seal away from the injector.
2. Carefully cut and discard the lower fuel injector Teflon® seal.
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NOTE: Do not lubricate the new lower Teflon® fuel injector seals.
1. Install the Teflon® Seal Guide onto the fuel injector tip. Use Special Service Tool: 310-207 Installer, Fuel Injector Seal Assembly.
2. NOTE: Once the Teflon® seal is installed on the Teflon® Seal Guide, it should immediately be installed onto the fuel injector to avoid excessive expansion of the Teflon® seal.
  
  NOTE: Make sure that new lower fuel injector Teflon® seals are installed.
  
  Install the new Teflon® seals onto the Teflon® Seal Guide, using the Pusher Tool, slide the Teflon® seals along the Teflon® Seal Guide.
3. Using the Pusher Tool, slide the Teflon® seals off of the Teflon® Seal Guide and into the groove on the fuel injectors. Use Special Service Tool: 310-207 Installer, Fuel Injector Seal Assembly.
4. Remove the special tools.
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NOTE: Make sure the Teflon® seal is fully seated in the groove on the fuel injector before sizing the Teflon® seal.
1. Massage and warm the Teflon® seal with your fingers before the Teflon® seal sizer tool is installed. This will aid in installing the Teflon® seal sizer tool.
2. NOTE: The beveled opening of the Teflon® seal sizer tool goes away from the seal.
  
  Position the Teflon® seal sizer tool with the larger opening towards the Teflon® seal. Push while turning the Teflon® seal sizer tool 180 degrees. Use Special Service Tool: 303-1567 Sizer, Teflon Seal.
3. Once the Teflon® seal sizer tool is installed, check and make sure the Teflon® seal is in the sizing portion of the Teflon® seal sizer tool.
4. After one minute, turn the Teflon® seal sizer tool back 180 degrees and remove.
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NOTE: Make sure that new fuel injector support rings and new fuel injector O-ring seals are installed.
1. NOTE: The new the fuel injector support rings must be installed in the correct orientation with the wide surface area facing up against the fuel injector O-ring seals. Improperly installed support rings may cause the fuel system to leak.
  
  Install the new the fuel injector support rings.
2. Install the new fuel injector O-ring seals.
3. Install the new the fuel injector clips.
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NOTE: The anti-rotation finger of the fuel injector must slip into the groove of the fuel rail cup.

Install the fuel injectors to the fuel rail.

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Connect the fuel injector electrical connectors.

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NOTE: Do not lubricate the new lower Teflon® fuel injector seals.

Install the fuel rail, push down on the fuel rail above the injectors, then tighten the fuel rail bolts in the sequence shown.

Torque: Stage 1: 89 lb.in (10 Nm) | Stage 2: Tighten an additional : 45°

Fig 1: Direct Injection Fuel Rail RH Tightening Sequence
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Connect the fuel injector main harness electrical connector. Attach the electrical connector retainer to the cylinder head.

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Install the right front fender splash shield. Refer to: Fender Splash Shield .
Install the direct injection fuel rail LH. Refer to: Direct Injection Fuel Rail LH .