Fuel Injection Supply Manifold And Fuel Injector - 4.0L 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.

CAUTION:

If the supply manifold is used as a leverage device, damage can occur to the supply manifold. Care must be taken when working around the supply manifold.

Remove the intake manifold. See INTAKE MANIFOLD REMOVAL/INSTALLATION - 4.0L .
Disconnect the fuel tube spring lock coupling.
NOTE:
- One electrical connector shown, the other five are similar.
Disconnect the six fuel injector electrical connectors.

Fig 1: Disconnecting Fuel Injector Electrical Connectors
Courtesy of MAZDA MOTORS CORP.
Remove the four bolts from the fuel tube.

Fig 2: Removing Bolts From Fuel Tube
Courtesy of MAZDA MOTORS CORP.
Disconnect the fuel pulse damper vacuum hose.

Fig 3: Disconnecting Fuel Pulse Damper Vacuum Hose
Courtesy of MAZDA MOTORS CORP.
Remove the fuel injection supply manifold.

Fig 4: Removing Fuel Injection Supply Manifold - With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Remove the fuel injectors from the fuel injection supply manifold.

Fig 5: Removing Fuel Injectors From Fuel Injection Supply Manifold
Courtesy of MAZDA MOTORS CORP.
Remove and discard the fuel injector O-ring seals.

Fig 6: 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.