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Fuel Rails & Injectors: Installation

Install NEW "O" rings on injectors and install injectors. Tighten injector holders to 22-29 INCH lbs. (2.5-3.3 N.m). Install fuel rail. Using NEW gaskets, install lower and upper intake manifold collectors and tighten bolts in sequence to 13-16 ft. lbs. (18-22 N.m). See Fig 2 . To complete installation, reverse removal procedure. Start engine and check for leaks.

Fig 1: Removing & Installing Fuel Rail & Injector (Maxima)
G93D78876Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Upper & Lower Intake Manifold Collector Tightening Sequence (Maxima)
G90C21081Courtesy of NISSAN MOTOR CO., U.S.A.


Clean injector exterior. Install NEW "O" rings on injectors and install injectors. Install fuel rail assembly. Tighten fuel rail bolts in sequence to specification. See Fig 1 or Fig 2 . See TORQUE SPECIFICATIONS  . To complete installation, reverse removal procedure. Pressurize fuel system and check for fuel leaks.

Fig 1: Fuel Rail Tightening Sequence (1.6L)
G91G16721Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Fuel Rail Tightening Sequence (2.0L)
G91H16722Courtesy of NISSAN MOTOR CO., U.S.A.


Clean injector exterior. Install NEW "O" rings on injectors. Install injectors and fuel rail. Install EGR backpressure transducer valve. Pressurize fuel system and check for leaks.



Install NEW "O" rings and insulators on injectors. Install injectors and injector holders. Tighten injector holders to 26-35 INCH lbs. (3-4 N.m). Install fuel rail. To complete installation, reverse removal procedure. Pressurize fuel system and check for leaks.



Install NEW "O" rings on injectors and install injectors. Tighten injector holders to 22-29 INCH lbs. (2.5-3.3 N.m). Install fuel rail. Install intake manifold collector and tighten bolts to 13-16 ft. lbs. (18-22 N.m). To complete installation, reverse removal procedure. Start engine and check for leaks.



Clean injector exterior. Install NEW "O" rings on injectors and install injectors. Tighten injector holders to specification. See TORQUE SPECIFICATIONS  . Install fuel rail and pressure regulator. Install intake manifold collector and tighten bolts to specification. To complete installation, reverse removal procedure. Check for fuel leaks.

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