ION 2006-2007

Cylinder Head


Removal & Installation

Only remove the cylinder head when the engine is cold. Warpage may result if the cylinder head is removed while the engine is hot.

  1. Before servicing the vehicle, refer to the Precautions Section.
  3. Drain the cooling system.
  5. Drain the engine oil.
  7. Properly relieve the fuel system pressure.
  9. Remove or disconnect the following:

    Negative battery cable
    Intake manifold
    Exhaust manifold
    Timing chain
    Cylinder head bolts using the proper sequence
    Cylinder head


To install:

Click image to see an enlarged view

Fig. Cylinder head bolt loosening sequence

Set the crankshaft to 60 degrees Before Top Dead Center (BTDC) or after Top Dead Center (TDC) to prevent contact between the pistons and valves.

  1. Install or connect the following:

    New cylinder head gasket
    Cylinder head and align it on the dowels
    New cylinder head bolts and torque them in sequence to 22 ft. lbs. (30 Nm) plus 155 degrees
    Front 4 cylinder head bolts coated with Loctite® and torque them to 26 ft. lbs. (35 Nm)

    Click image to see an enlarged view