Lower Intake Manifold: Installation

CAUTION: Never use silicone grease. It will clog the fuel injectors.

NOTE: Inspect the fuel injector O-ring seals and install O-ring seals if necessary.

Lubricate the O-ring seals lightly with SAE 5W-20 Motor Oil and install the fuel injectors into the lower intake manifold.
Install the fuel rail.
1. Position the fuel rail (1).
2. Install the four bolts (2).
  
  Fig 1: Installing Fuel Rail
  Courtesy of MAZDA MOTORS CORP.
Install the lower intake manifold assembly and tighten the bolts in the sequence shown.

Fig 2: Lower Intake Manifold Bolt Tightening Sequence
Courtesy of MAZDA MOTORS CORP.
Connect the fuel rail.
1. Connect the six fuel injectors (1).
2. Connect the fuel pressure damper vacuum line (2).
Fig 3: Connecting Fuel Rail
Courtesy of MAZDA MOTORS CORP.
Install the upper intake manifold. Refer to the following:
- For 2001 models, see UPPER INTAKE MANIFOLD .
- For 2002 models, see UPPER INTAKE MANIFOLD .
- For 2003 models, see UPPER INTAKE MANIFOLD .
Connect the fuel line spring lock coupling. Refer to the following:
- For 2001 models, see FUEL LINE CONNECTORS (B2300, B2500, B3000, B4B4000, MPV & TRIBUTE) .
- For 2002 models, see FUEL LINE CONNECTORS (B2300, B3000, B4000, MPV & TRIBUTE) .
- For 2003 models, see FUEL LINE CONNECTORS (B2300, B3000, B4000 & TRIBUTE) .