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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 599 (Engine Mechanical - 3.8L (Unit Repair)) >> Repair Instructions >> Exhaust Manifold Installation - Right

Exhaust Manifold Installation - Right

WARNING: This page is about a different car, the 2002 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the exhaust manifold studs.

    Tighten: 

    Tighten the exhaust manifold studs to 10 N.m (89 lb in) 

    Fig 1: Exhaust Manifold Studs
    G01764637Courtesy of GENERAL MOTORS CORP.
  2. Install the exhaust manifold gasket.
  3. Install the exhaust manifold.
  4. Install the exhaust manifold bolts and nuts.

    Tighten: 

    Tighten the exhaust manifold bolts and nuts to 30 N.m (22 lb ft) 

    Fig 2: Exhaust Manifold, Bolts And Gasket
    G01764638Courtesy of GENERAL MOTORS CORP.
  5. Install the right side spark plugs.

    Tighten: 

    • Tighten the spark plugs to 27 N.m (20 lb ft) when installing the spark plugs in to a new cylinder head.
    • Tighten the spark plugs to 15 N.m (13 lb ft) when re-installing the spark plugs after initial installation.

  6. Install the lower right exhaust manifold heat shield.
    Fig 3: Lower Right Exhaust Manifold Heat Shield
    G01764639Courtesy of GENERAL MOTORS CORP.
  7. Install the upper right exhaust manifold heat shield.
    Fig 4: Upper Right Exhaust Manifold Heat Shield
    G01764640Courtesy of GENERAL MOTORS CORP.
  8. Install the fuel injector sight shield cover bracket.
  9. Install the fuel injector sight shield cover bracket nuts.

    Tighten: 

    Tighten the fuel injector sight shield bracket nuts to 30N.m (22 lb ft) 

    Fig 5: Fuel Injector Sight Shield Cover Bracket
    G01764641Courtesy of GENERAL MOTORS CORP.
  10. Install the right engine lift hook.
  11. Install the right engine lift hook nut and bolt.

    Tighten: 

    Tighten the right engine lift hook nut and bolt to 30 N.m (22 lb ft) 

    Fig 6: Right Engine Lift Hook
    G01764642Courtesy of GENERAL MOTORS CORP.
  12. Coat the threads of the heated oxygen sensor with anti-seize compound.
  13. Install the heated oxygen sensor.

    Tighten: 

    Tighten the heated oxygen sensor to 42 N.m (31 lb ft) 

  14. Install the heated oxygen sensor lead.
    Fig 7: Heated Oxygen Sensor Lead
    G01764643Courtesy of GENERAL MOTORS CORP.

    Important:  Inspect the EGR outlet pipe for leaks during installation. If leaks are present, replace the EGR adapter assembly.

  15. Install the EGR valve adapter to cylinder head.
  16. Install the EGR valve adapter to cylinder head bolts.

    Tighten: 

    Tighten the EGR valve adapter to cylinder head bolts to 50 N.m (37 lb ft) 

  17. Install the EGR inlet pipe to the exhaust manifold.
  18. Install the EGR inlet pipe bolt.

    Tighten: 

    Tighten the EGR inlet pipe bolt to 29 N.m (21 lb ft) 

  19. Install the EGR outlet pipe to EGR valve adapter.
  20. Install the EGR outlet pipe to EGR valve adapter nut.

    Tighten: 

    Tighten the EGR outlet pipe to EGR valve adapter nut to 29 N.m (21 lb ft) 

    Fig 8: EGR Valve Components
    G01764644Courtesy of GENERAL MOTORS CORP.