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Cylinder Head Removal

  • Use fender covers to avoid damaging painted surfaces.
  • To avoid damage, unplug the wiring connectors carefully while holding the connector portion.
  • To avoid damaging the cylinder head, wait until the engine coolant temperature drops below 38 °C (100 °F) before loosening the cylinder head bolts.
  • Mark all wiring and hoses to avoid misconnection. Also, be sure that they do not contact other wiring or hoses, or interfere with other parts.

  1. Disconnect the upper radiator hose (A), the heater hose (B), and the water bypass hose (C).
  1. Remove the heater hose from the clamps (D).
  1. Remove the following engine wire harness connectors and wire harness clamps from the cylinder head:
    • Four injector connector
    • Engine coolant temperature (ECT) sensor 1 connector
    • Camshaft position (CMP) sensor connector
    • Secondary heated oxygen sensor (secondary HO2S) connector
    • Rocker arm oil control solenoid connector

  1. Remove the harness holder.

  1. Remove the harness holder mounting bolt (A) and the ground cable (B), then remove the harness holder (C) from the bracket.

  1. Remove the cylinder head bolts. To prevent warpage, loosen the bolts in sequence 1/3 turn at a time; repeat the sequence until all bolts are loosened.
  1. Remove the cylinder head.