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Home >> Geo >> 1991 >> Prizm Base, 4D Hatchback, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 1.6L 4-CYL - VINS [5,6] >> Removal & Installation >> Cylinder Head >> Removal (Prizm)

Removal (Prizm)

  1. Disconnect negative battery cable. Drain cooling system. Raise and support vehicle. Remove lower engine covers.
  2. Remove air cleaner assembly. Disconnect accelerator cable at throttle body. Disconnect cruise control cable and electrical connection at cruise control actuator. Remove cruise control actuator and bracket.
  3. On A/T models, disconnect kickdown cable at transaxle. On all models, release fuel pressure. See FUEL PRESSURE RELEASE under REMOVAL & INSTALLATION. Disconnect necessary electrical connections, coolant hoses, vacuum hoses and fuel lines.
  4. Disconnect cold start injector pipe. If necessary, remove fuel rail with injectors attached. Disconnect electrical connections from fuel injectors.
  5. Remove fuel rail-to-cylinder head bolts. Remove fuel rail, with fuel injectors attached, from cylinder head. Ensure fuel injectors DO NOT fall off when removing fuel rail.
  6. Remove coolant inlet and outlet housings from cylinder head. Disconnect spark plug wires. Remove windshield washer reservoir. Disconnect exhaust pipe from exhaust manifold.
  7. Disconnect support brace from exhaust manifold. Remove cylinder head-to-cylinder block bracket. Remove timing belt. See TIMING BELT under REMOVAL & INSTALLATION.
  8. Disconnect electrical connections at distributor. Remove distributor cap. Mark rotor-to-distributor housing position and housing-to-cylinder head position. Remove retaining bolt and remove distributor assembly.
  9. Remove camshafts. See CAMSHAFTS under REMOVAL & INSTALLATION. Remove cylinder head bolts in proper sequence. Refer to Fig 1 . Note location and length of cylinder head bolts for installation reference. Remove cylinder head and gasket.
Fig 1: Cylinder Head Bolt Removal & Installation Sequence (Prizm)
G91J00413Courtesy of GENERAL MOTORS CORP.