Direct Injection Fuel Rail LH: 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.
Courtesy of FORD MOTOR COMPANY
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.
Courtesy of FORD MOTOR COMPANY
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.
Courtesy of FORD MOTOR COMPANY
NOTE: Make sure the Teflon® seal is fully seated in the groove on the fuel injector before sizing the Teflon® seal.

NOTE: The beveled opening of the Teflon® seal sizer tool goes away from the 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. 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.
Courtesy of FORD MOTOR COMPANY
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.
Courtesy of FORD MOTOR COMPANY
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.

Courtesy of FORD MOTOR COMPANY
Connect the fuel injector electrical connectors.

Courtesy of FORD MOTOR COMPANY
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: 45°

Fig 1: Direct Injection Fuel Rail LH Tightening Sequence
Courtesy of FORD MOTOR COMPANY
NOTE: In stage 3, if the torque required to tighten any flare nut on the NEW high-pressure fuel tube reaches or exceeds 55 lb.ft (75 Nm), then that high pressure fuel tube must be discarded and replaced with another NEW high-pressure fuel tube.

NOTE: Make sure that a NEW high-pressure fuel tube is installed.

NOTE: Calculate the correct torque wrench setting for the following torque using the Torque Wrench Adapter Formulas in the chart below.

Courtesy of FORD MOTOR CO.

Install the high-pressure fuel tube and tighten the flare nuts finger tight, then tighten the flare nuts in the following 3 stages.

Torque: Stage 1: 62 lb.in (7 Nm) | Stage 2: 89 lb.in (10 Nm) | Stage 3: Tighten an additional : 30°

Courtesy of FORD MOTOR COMPANY
Connect the fuel injector main harness electrical connector. Attach the electrical connector retainer to the cylinder head.

Courtesy of FORD MOTOR COMPANY
NOTE: Calculate the correct torque wrench setting for the following torque using the Torque Wrench Adapter Formulas in the chart below.

Courtesy of FORD MOTOR CO.

NOTE: Make sure that a NEW high-pressure fuel tube and a NEW retaining nut is installed.
1. Install the NEW high-pressure fuel tube and tighten the flare nuts finger tight.
2. Install NEW the high-pressure fuel tube retaining nut finger tight.
3. NOTE: In stage 3, if the torque required to tighten any flare nut on the NEW high-pressure fuel tube reaches or exceeds 55 lb.ft (75 Nm), then that high pressure fuel tube must be discarded and replaced with another NEW high-pressure fuel tube.
  
  Tighten the high-pressure fuel tube flare nuts in the following 3 stages.
  
  Torque: Stage 1: 80 lb.in (9 Nm) | Stage 2: 89 lb.in (10 Nm) | Stage 3: Tighten an additional : 30°
4. Tighten the high-pressure fuel pump to fuel rail high-pressure fuel tube retaining nut.
  Torque: 71 lb.in (8 Nm)
Courtesy of FORD MOTOR COMPANY
Attach the harness retainer.

Courtesy of FORD MOTOR COMPANY
Install the left front fender splash shield. Refer to: Fender Splash Shield .
Install the lower intake manifold. Refer to: Lower Intake Manifold .
NOTE: When removing or installing the high-pressure fuel pump noise insulator, spreading the openings will reduce the risk of damage.

Install the high-pressure fuel pump noise insulator.

Courtesy of FORD MOTOR COMPANY
Connect the high-pressure fuel pump electrical connector.

Courtesy of FORD MOTOR COMPANY