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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1040 (Engine Mechanical - QG18DE) >> Cylinder Head >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain engine coolant. Refer to ENGINE COOLING SYSTEM .
    CAUTION: Be careful not to spill coolant on drive belts.
    Fig 1: Removing Drain Plug
    G00774038Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Release the fuel pressure. Refer to FUEL PRESSURE RELEASE .
  3. Remove the air duct to intake manifold collector.
  4. Remove the engine drive belts.
  5. Remove the front splash undercovers.
  6. Remove the front exhaust tube. Refer to REMOVAL AND INSTALLATION .
  7. Before removing the intake manifold collector from the engine, the following parts should be disconnected to remove the intake manifold collector:

    Harness connectors for:

    • Electric throttle control actuator
    • Swirl control valve (SULEV only)
    • Swirl control position sensor (SULEV only)
    • Water hoses from collector
    • Heater hoses

    Vacuum hoses for:

    • EVAP canister
    • Power brake booster
  8. Remove the intake manifold rear supports. Refer to , "REMOVAL AND INSTALLATION ".
  9. Remove the exhaust manifold. Refer to , "REMOVAL AND INSTALLATION ".
  10. Remove the spark plugs.
  11. Remove rocker cover. Refer to, "REMOVAL AND INSTALLATION ".
  12. Remove camshafts. Refer to, "REMOVAL AND INSTALLATION ".
  13. Remove cylinder head bolts.
    • Cylinder head bolts should be loosened in two or three steps.
    CAUTION: Head warping or cracking could result from removing the cylinder head bolts in incorrect order.
    Fig 2: Removing Cylinder Head Bolts
    G00774039Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Remove cylinder head with intake manifold.