LEMON Manuals: Even more car manuals for everyone
Home >> Isuzu >> 1992 >> Impulse XS, 2D Hatchback, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.6L 4-CYL - VINS [4,5,6] & 1.8L 4-CYL - VIN [8] >> Removal & Installation >> Cylinder Head >> Removal (1.8L DOHC & 1.6L DOHC Non-Turbo)

Removal (1.8L DOHC & 1.6L DOHC Non-Turbo)

  1. Release fuel pressure. See FUEL PRESSURE RELEASE  under REMOVAL & INSTALLATION. Disconnect negative battery cable. Mark hood and hood hinge for reassembly reference. Remove hood. Drain cooling system. Disconnect accelerator cable from upper intake manifold. Disconnect breather hose.
  2. Disconnect Manifold Absolute Pressure (MAP) sensor vacuum hose. Disconnect vacuum hose for brake booster. Disconnect 2 canister hoses from pipes attached to upper intake manifold.
  3. Remove canister and MAP sensor pipes from upper intake manifold. Disconnect O2 sensor connector. Disconnect ignition coil wire. Disconnect cable from thermostat housing flange. Disconnect coolant temperature sensor and thermo unit sensor connectors.
  4. Disconnect cable from side of induction control assembly. Disconnect 2 harness connectors (12-pin and 16-pin) near left strut tower. Disconnect heater hoses. Remove upper radiator hose.
  5. Disconnect throttle valve coolant hoses. Remove coolant by-pass pipe from cylinder head. Disconnect fuel inlet and return hoses. Remove right side undercover (heat shield). Disconnect exhaust pipe from exhaust manifold.
  6. Support engine. Remove right side engine mount. Remove coolant recovery tank with bracket. Remove power steering pump belt. Remove 2 bolts attaching power steering pump. Position power steering pump with hoses attached out of way.
  7. Remove alternator belt. Remove engine mounting bridge bracket. Engine mounting bridge bracket is located across front of engine above crankshaft pulley. Remove valve cover center cover.
  8. Remove spark plug wires. Disconnect PCV hose. Remove upper timing belt cover. Remove power steering pump bracket. Remove valve cover. Remove timing belt. See TIMING BELT  under REMOVAL & INSTALLATION.
  9. Loosen tension pulley lock bolt. Using a hex wrench, turn tension pulley clockwise to loosen tension. Remove timing belt from camshafts. Remove cylinder head bolts in proper sequence. See Fig 1 .
  10. Hoist cylinder head assembly enough to disconnect oil cooler coolant hose. Disconnect oil cooler coolant hose. Remove cylinder head assembly from vehicle.
Fig 1: Cylinder Head Bolt Removal & Installation Sequence (DOHC)
G91E00467Courtesy of ISUZU MOTOR CO.
scientia non olet · About LEMON Manuals