GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Optra 🢒 Engine 🢒 Engine Mechanical - 2.0L (L34 GMDAT) 🢒 Cylinder Head Disassemble

Tools Required

    • J 8062 (KM-348) Valve Spring Compressor - Head Off
    • KM-653-A Adapter

    Caution: Refer to Compressed Valve Spring Caution in the Preface section.

    Caution: Refer to Safety Glasses Caution in the Preface section.


    Object Number: 1241254 Size: SH
  1. Remove the cylinder head with the intake manifold and the exhaust manifold attached. Refer to Cylinder Head Replacement .
  2. Remove the coolant temperature sensor.
  3. Remove the exhaust manifold heat shield bolts.
  4. Remove the exhaust manifold heat shield.
  5. Remove the exhaust manifold retaining nuts in the sequence shown.
  6. Remove the exhaust manifold.
  7. Remove the exhaust manifold gasket.
  8. Remove the exhaust manifold studs.

    9. Object Number: 1241256 Size: SH
  9. Remove the thermostat housing mounting bolts.
  10. Remove the thermostat housing assembly.
  11. Remove the fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement .
  12. Remove the coolant bypass housing mounting bolts and the housing.

    13. Object Number: 1252157 Size: SH
  13. Remove the intake manifold retaining nuts and the retaining bolts in the sequence shown.
  14. Remove the intake manifold.
  15. Remove the intake manifold gasket.

    16. Object Number: 1241257 Size: SH
  16. Remove the ignition coil and exhaust gas recirculation (EGR) mounting bracket and ignition wires.
  17. Remove the ignition coil and EGR mounting bracket and the ignition wires.
  18. Remove the intake manifold studs.
  19. Remove the spark plugs.

    20. Object Number: 1252134 Size: SH
  20. Remove the camshaft bearing cap bolts gradually and in the sequence shown for each camshaft cap.

    21. Object Number: 1252180 Size: SH
  21. Remove the intake camshaft caps. Maintain the correct positions for installation.
  22. Remove the intake camshaft.
  23. Remove the intake valve lash adjusters.
  24. Remove the exhaust camshaft caps. Maintain the correct positions for installation.
  25. Remove the exhaust camshaft.
  26. Remove the exhaust valve lash adjusters.

    27. Object Number: 1252182 Size: SH
  27. Compress the valve springs with the J 8062  (1) and the KM-653-A  (2).
  28. Remove the valve retainers.
  29. Remove the J 8062  (1) and KM-653-A  (2).
  30. Remove the valve spring caps.
  31. Remove the valve springs. Maintain the original position of the valve springs for installation.

    32. Object Number: 1252183 Size: SH
  32. Remove the valves. Maintain the original position of the valves for installation.
  33. Remove the valve stem seals.