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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1001 (Engine Mechanical) >> On-Vehicle Repair >> Intake Manifold >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: To avoid the danger of being scalded, never drain the coolant when the engine is hot.
  1. Remove the engine cover with power tool.
  2. Release the fuel pressure. Refer to "INSPECTION ".
  3. Remove intake manifold collector. Refer to "REMOVAL AND INSTALLATION ".
  4. Disconnect fuel tube quick connector at vehicle piping side.
  5. To remove the quick connector cap, hold the sides of the connector, push in the tabs and pull out the tube.
    Fig 1: Disconnecting Quick Connect Fitting
    G04875524Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • The tube can be removed when the tabs are completely depressed. Do not twist it more than necessary.
    • 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.
      • Fig 2: Covering Connector Into Plastic Bags
      G04875526Courtesy of NISSAN MOTOR CO., U.S.A.
    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.
  6. 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.
  7. Loosen the bolts in the order as shown, and remove the intake manifold with power tool.
    Fig 3: Intake Manifold Bolt Tightening & Loosening Sequence
    G00529948Courtesy of NISSAN MOTOR CO., U.S.A.
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