Fuel Injection Supply Manifold And Fuel Injector - 2.3L Removal/Installation

WARNING:

Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related components. Highly flammable mixtures are always present and can be ignited. Failure to follow these instructions can result in personal injury.

WARNING:

Fuel in the fuel system remains under high pressure even when the engine is not running. Before working on or disconnecting any of the fuel lines or fuel system components, the fuel system pressure must be relieved. Failure to follow these instructions can result in personal injury.

Disconnect the battery ground cable.
Relieve the fuel system pressure.
Remove the upper intake manifold. See INTAKE MANIFOLD REMOVAL/INSTALLATION - 2.3L .
Disconnect the fuel injector electrical connectors.

Fig 1: Disconnecting Fuel Injector Electrical Connectors
Courtesy of MAZDA MOTORS CORP.
Disconnect the fuel injector wiring harness from the fuel injector supply manifold.

Fig 2: Disconnecting Fuel Injector Wiring Harness
Courtesy of MAZDA MOTORS CORP.
Disconnect the fuel tube spring lock coupling.

Fig 3: Disconnecting Fuel Tube Spring Lock Coupling
Courtesy of MAZDA MOTORS CORP.
Using the special tool, disconnect the fuel tube.

Fig 4: Disconnecting Fuel Tube
Courtesy of MAZDA MOTORS CORP.
Remove the fuel injection supply manifold.
- Remove the bolts and the spacer insulators.
- Remove the fuel supply manifold.
  
  Fig 5: Removing Fuel Supply Manifold - With Torque Specifications
  Courtesy of MAZDA MOTORS CORP.
Remove the fuel injectors.
1. Remove the retaining clip.
2. Remove the fuel injector.
  
  Fig 6: Removing Fuel Injector
  Courtesy of MAZDA MOTORS CORP.
Remove and discard the fuel injector O-ring seals.

Fig 7: Removing Fuel Injector O-Ring Seals
Courtesy of MAZDA MOTORS CORP.
NOTE:
- Lubricate the new fuel injector O-ring seals with clean engine oil.
To install, reverse the removal procedure.