Nissan Maxima Service and Repair Manual: Intake Manifold
Removal and Installation
![Nissan Maxima. Removal and Installation](/images/manuals/399/nissan_maxima_intake_manifold_45.jpg)
- Intake manifold
- Intake manifold gaskets
- Refer to INSTALLATION
REMOVAL
WARNING: To avoid the danger of being
scalded, do not drain the coolant when the engine is hot.
![Nissan Maxima. REMOVAL](/images/manuals/399/nissan_maxima_intake_manifold_46.jpg)
- Release the fuel pressure. Refer to EC-592, "Inspection".
- Disconnect the battery negative terminal. Refer to PG-67, "Removal
and Installation (Battery)".
- Remove intake manifold collector. Refer to EM-25, "Removal and
Installation".
- Disconnect fuel tube quick connector at vehicle piping side.
- To remove the quick connector cap (1), hold the sides of the
connector (A), push in the tabs (2) and pull out the fuel tube (3).
CAUTION:
- The tube can be removed when the tabs are completely
depressed. Do not twist fuel tube.
- Do not use any tools to remove the quick connector.
- Keep the resin tube away from heat. Be especially careful
when welding near the tube.
- Prevent acid liquids such as battery electrolyte, etc. from
getting on the resin tube.
- Do not bend or twist the tube during removal or installation.
- Do not remove the remaining retainer on the tube.
- When the tube is replaced, also replace the retainer with a
new one.
- To keep the connecting portion clean and to avoid damage and
foreign materials entering, cover the ends of the fuel tubes with plastic
bags or something similar.
![Nissan Maxima. REMOVAL](/images/manuals/399/nissan_maxima_intake_manifold_47.gif)
NOTE: If the connector and the tube are
stuck together, push and pull several times until they start to move. Then
disconnect them by pulling.
- Remove the fuel rail with the fuel injectors attached, from the
intake manifold. Remove the fuel injector O-rings and use new O-rings for
installation.
CAUTION: Do not reuse O-rings.
- Loosen the bolts in the order as shown, and remove the intake
manifold with power tool.
![Nissan Maxima. REMOVAL](/images/manuals/399/nissan_maxima_intake_manifold_48.jpg)
INSPECTION AFTER REMOVAL
Surface Distortion
![Nissan Maxima. INSPECTION AFTER REMOVAL](/images/manuals/399/nissan_maxima_intake_manifold_49.gif)
- Using straightedge and feeler gauge, inspect the surface
distortion of the intake manifold.
Standard : 0.1 mm (0.004 in)
INSTALLATION
CAUTION: Do not reuse intake manifold
gaskets.
Installation is in the reverse order of removal. Follow the procedure below
for specific tightening sequences and procedures.
- Install intake manifold bolts in two steps in the numerical order
as shown.
![Nissan Maxima. INSTALLATION](/images/manuals/399/nissan_maxima_intake_manifold_50.jpg)
Step 1 : 7.4 N*m (0.75 kg-m, 65 in-lb)
Step 2 : 25.5 N*m (2.6 kg-m, 19
ft-lb)
NOTE: After installation, it is necessary to
re-calibrate the electric throttle control actuator as follows:
- Perform the "Throttle Valve Closed Position Learning" when harness
connector of the electric throttle control actuator is disconnected.
Refer to EC-21, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair
Requirement".
- Perform the "Idle Air Volume Learning" when the electric throttle
control actuator is replaced. Refer to EC- 21, "IDLE AIR VOLUME LEARNING
: Special Repair Requirement".
- Install the quick connector as follows:
- Make sure no foreign substances are deposited in and around the
fuel tube and quick connector and that there is no damage.
- Align the center to insert the quick connector straight onto the
fuel tube.
- Insert the fuel tube until a click is heard.
- Install the quick connector cap on the quick connector joint.
Align the arrow mark on the quick connector cap to the upper side.
- Install the fuel hose into the hose clamp.
![Nissan Maxima. INSTALLATION](/images/manuals/399/nissan_maxima_intake_manifold_51.gif)
INSPECTION AFTER INSTALLATION
Make sure there are no fuel leaks at connections as follows:
- Apply fuel pressure to fuel lines by turning ignition switch ON
with engine stopped. Then check for fuel leaks at connections.
- Start the engine and rev it up and check for fuel leaks at
connections.
CAUTION: Do not touch engine immediately
after stopping as engine is extremely hot.
NOTE:
Use mirrors for checking on connections out of the direct line of sight.
Removal and Installation
Intake manifold collector
Intake manifold collector gasket
Electric throttle control actuator gasket
Electric throttle control actuator
Refer to INSTALLATION ...
Exploded View
Gasket
Exhaust manifold (RH)
Exhaust manifold heat shield (RH)
Air fuel ratio sensor 1 (bank 1)
Ring gasket
Three way catalyst (bank 1)
Three way catalyst support ( ...
Other materials:
ABS actuator and electric unit (control unit)
Exploded View
From master cylinder secondary side
Grommet
ABS actuator and electric unit (control
unit) bracket
From master cylinder primary side
To front LH brake caliper
To rear RH brake caliper
To rear LH brake caliper
To front RH brake caliper
ABS actuator and el ...
Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1. GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurred).
2. CHECK DTC
Check DTC.
Perform the f ...
Cowl top
Exploded View
Cowl top side trim cover (RH)
Cowl top grille
Lower cowl top extension brace
Lower cowl top extension (RH)
Lower cowl top extension seal (RH)
Lower cowl top extension seal (LH)
Lower cowl top extension (LH)
Front wiper drive assembly
Cowl top side trim cover ...