INJECTOR (6-Speed A/T, '16-'18 9-Speed A/T): Installation

NOTE:  When replacing the fuel injector, always replace all three injectors on the same bank as a set.

1. Injector Seal - Install

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   1. With a paper towel, carefully wipe off any carbon from the area (A) shown. NOTE:  Do not wipe off the tip area (B) of the injector as it may be damaged. If the tip of the injector is dirty or clogged, it must be replaced. The injectors cannot be cleaned.

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   2. Quickly push a new seal (A) down to the groove (B) of the injector using the seal guide tool (C) and the seal installer (D).

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   3. Joint the sizing tools (A), then slide them as a set onto the seal (B) until tools touch to the injector stepped surface (C) as shown, and hold the tools to reform the seal for 30 seconds or more.

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   4. Remove the sizing tool, and check that the seal is installed correctly.   NOTE:  When cleaning the sizing tool, be careful not to scratch the sizing tool bore.

2. Injector - Install

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   1. Install the new back-up ring (A), new O-ring (B) and the injector cover (C) on the injector (D). NOTE:  Set the direction of the back-up ring as shown Check that the back-up ring sets correctly after installation. Use compressed air to insure that there are no dust or debris around the ring. 2. Coat the O-ring with clean engine oil, then install the injector onto the fuel rail (E) with a new clip (F). NOTE:  When installing the injector, be sure to protect the injector from dust or debris.

3. Fuel Rail and Fuel Injector - Install
   Fig 1: Fuel Rail and Fuel Injector With Torque Specifications

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   1. Coat the injector holes (A) on the cylinder head with clean engine oil. 2. Carefully install the fuel rails (B) with the injectors into the cylinder head straight and equal. NOTE:  When installing the injector, protect tip of the injector from dust or debris. 3. Install the nuts (C), and tighten them slowly in an alternate pattern until the fuel rail sits on the cylinder head. 4. Tighten the nuts and the bolts (D) to the specified torque. 5. Connect the connectors (E).

4. Fuel Joint Pipe - Install

   NOTE:  Failure to install a new fuel joint pipe will cause fuel leaks.

5. Fuel Leak (Low Pressure Side) - Check

   1. Turn the vehicle to the ON mode, but do not start the engine. After the fuel pump runs for about 2 seconds, the fuel line will be pressurized. Repeat this two or three times, then check for fuel leakage.

6. Fuel Leak (High Pressure Side) - Check
7. Fuel Rail Cover - Install

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8. High Pressure Fuel Pump Cover - Install
9. Intake Manifold Base and Intake Manifold - Install - Refer to:

   Intake Manifold Removal and Installation (9-Speed A/T) (2019 2020 2021) 

   Intake Manifold Removal and Installation (6-Speed A/T), ('16-'18 9-Speed A/T)