Fuel Injection Supply Manifold And Fuel Injector - 3.0L Removal / Installation

Fig 1: Fuel Injection Supply Manifold And Fuel Injector Replacement Components With Torque Specifications - 3.0L

Courtesy of MAZDA MOTORS CORP.

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.

1. Disconnect the battery. See BATTERY DISCONNECT .
2. Relieve the fuel system pressure.
3. Remove the upper intake manifold. See INTAKE MANIFOLD UPPER REMOVAL / INSTALLATION - 3.0L , .
4. Disconnect the fuel injectors electrical connectors.
   Fig 2: Locating Fuel Injectors Electrical Connectors

   Courtesy of MAZDA MOTORS CORP.
5. Disconnect the fuel supply tube spring lock coupling.
   Fig 3: Locating Fuel Supply Tube Spring Lock Coupling

   Courtesy of MAZDA MOTORS CORP.
6. Remove the fuel injection supply manifold.
   • Re move the four bolts.
   • Remove the fuel injection supply manifold and the fuel injectors as an assembly.
   Fig 4: Fuel Injection Supply Manifold Bolts With Torque Specifications

   Courtesy of MAZDA MOTORS CORP.
7. Remove the fuel injectors.
   Fig 5: Locating Fuel Injector

   Courtesy of MAZDA MOTORS CORP.
8. Remove and discard the fuel injector O-ring seals.
   Fig 6: Locating Fuel Injector O-Rings

   Courtesy of MAZDA MOTORS CORP.
   NOTE:

   • Lubricate the new fuel injector O-ring seals with clean engine oil.
9. To install, reverse the removal procedure.