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have a saturn vue v6 need to change spark plugs need starting point and how


Inspection &


Inspection & Gapping



Check the plugs for deposits and wear. If they are not going to be replaced, clean the plugs thoroughly. Remember that any kind of deposit will decrease the efficiency of the plug. Plugs can be cleaned on a spark plug cleaning machine, which can sometimes be found in service stations, or you can do an acceptable job of cleaning with a stiff brush. If the plugs are cleaned, the electrodes must be filed flat. Use an ignition points file, not an emery board or the like, which will leave deposits. The electrodes must be filed perfectly flat with sharp edges; rounded edges reduce the spark plug voltage by as much as 50%.

Check spark plug gap before installation. The ground electrode (the L-shaped one connected to the body of the plug) must be parallel to the center electrode and the specified size wire gauge (please refer to the Tune-Up Specifications chart for details) must pass between the electrodes with a slight drag.



NOTE
NEVER adjust the gap on a used platinum type spark plug.


Always check the gap on new plugs, as they are not always set correctly at the factory. Do not use a flat feeler gauge when measuring the gap on a used plug, because the reading may be inaccurate. A round-wire type gapping tool is the best way to check the gap. The correct gauge should pass through the electrode gap with a slight drag. If you're in doubt, try one size smaller and one larger. The smaller gauge should go through easily, while the larger one shouldn't go through at all. Wire gapping tools usually have a bending tool attached. Use that to adjust the side electrode until the proper distance is obtained. Absolutely NEVER attempt to bend the center electrode. Also, be careful not to bend the side electrode too far or too often, as it may weaken and break off within the engine, requiring removal of the cylinder head to retrieve it.



Click image to see an enlarged view

Fig. A normally worn spark plug should have light tan or gray deposits on the firing tip




Click image to see an enlarged view

Fig. A carbon fouled plug, identified by soft, sooty, black deposits, may indicate an improperly tuned vehicle. Check the air cleaner, ignition components and engine control system




Click image to see an enlarged view

Fig. A variety of tools and gauges are needed for spark plug service




Click image to see an enlarged view

Fig. A physically damaged spark plug may be evidence of severe detonation in that cylinder. Watch that cylinder carefully between services, as continued detonation will not only damage the plug, but could also damage the engine




Click image to see an enlarged view

Fig. Checking the spark plug gap with a feeler gauge




Click image to see an enlarged view

Fig. An oil fouled spark plug indicates an engine with worn piston rings and/or bad valve seals, allowing excessive oil to enter the chamber




Click image to see an enlarged view

Fig. Adjusting the spark plug gap




Click image to see an enlarged view

Fig. This spark plug has been left in the engine too long, as evidenced by the extreme gap. Plugs with such an extreme gap can cause misfiring and stumbling, accompanied by a noticeable lack of power




Click image to see an enlarged view

Fig. If the standard plug is in good condition, the electrode may be filed flat-WARNING: do not file platinum plugs




Click image to see an enlarged view

Fig. A bridged or almost bridged spark plug, identified by a build-up between the electrodes, caused by excessive carbon or oil build-up on the plug




Click image to see an enlarged view

Fig. Used spark plugs which show damage may indicate engine problems

Check the plugs for deposits and wear. If they are not going to be replaced, clean the plugs thoroughly. Remember that any kind of deposit will decrease the efficiency of the plug. Plugs can be cleaned on a spark plug cleaning machine, which can sometimes be found in service stations, or you can do an acceptable job of cleaning with a stiff brush. If the plugs are cleaned, the electrodes must be filed flat. Use an ignition points file, not an emery board or the like, which will leave deposits. The electrodes must be filed perfectly flat with sharp edges; rounded edges reduce the spark plug voltage by as much as 50 percent.

Check the spark plug gap before installation. The ground electrode (the L-shaped one connected to the body of the plug) must be parallel to the center electrode and the specified size wire gauge (please refer to the Tune-Up Specifications chart for details) must pass between the electrodes with a slight drag.



NOTE

NEVER adjust the gap on a used platinum type spark plug.


Always check the gap on new plugs as they are not always set correctly at the factory. Do not use a flat feeler gauge when measuring the gap on a used plug, because the reading may be inaccurate. A round-wire type gapping tool is the best way to check the gap. The correct gauge should pass through the electrode gap with a slight drag. If you're in doubt, try one size smaller and one larger. The smaller gauge should go through easily, while the larger one shouldn't go through at all. Wire gapping tools usually have a bending tool attached. Use that to adjust the side electrode until the proper distance is obtained. Absolutely never attempt to bend the center electrode. Also, be careful not to bend the side electrode too far or too often as it may weaken and break off within the engine, requiring removal of the cylinder head to retrieve it.



Click image to see an enlarged view

Fig. "a1p40"" Inspect the spark plug to determine engine running conditions




Click image to see an enlarged view

Fig. "S212"" A variety of tools and gauges are needed for spark plug service




Click image to see an enlarged view

Fig. "S903"" Checking the spark plug gap with a feeler gauge




Click image to see an enlarged view

Fig. "S904"" Adjusting the spark plug gap




Click image to see an enlarged view

Fig. "S141"" If the standard plug is in good condition, the electrode may be filed flat-WARNING: do not file platinum plugs

Removal & Installation



2.2L Engine

  1. Disconnect the intake air temperature (IAT) sensor connector
  2.  
  3. Loosen the clamp at the air cleaner assembly

  4.  
  5. Remove the push-pin attachment from the outlet resonator/duct assembly to support bracket
  6.  
  7. Loosen the clamp at the throttle body assembly
  8.  
  9. Remove the outlet resonator/duct assembly
  10.  
  11. Disconnect the EI module electrical connector



    Click image to see an enlarged view

    Fig. Resonator/duct assembly removed



    Click image to see an enlarged view

    Fig. Ignition Module attachment bolts

  12.  
  13. Remove the ignition module attachment bolts

  14.  
  15. Remove the ignition module housing assembly with the spark plug boots from the spark plugs

    WARNING
    To avoid getting water and debris into the spark plug holes, used compressed air and a shop rag to blow out each spark plug hole before plugs are removed.


  16.  
  17. Remove the spark plugs using a spark plug socket.
  18.  


To install:



NOTE
Do NOT coat spark plug threads with anti-seize compound. If anti-seize compound is used and spark plugs are over-torqued, damage to the cylinder head threads may result





Click image to see an enlarged view

Fig. 2.2L engine with spark plugs removed

  1. Gap the spark plugs to 1.14mm
  2.  
  3. Install spark plugs and tighten to 15 ft. lbs. (20 Nm).



    Click image to see an enlarged view

    Fig. Apply dielectric compound to the spark plug boots

  4.  
  5. Apply dielectric compound to the spark plug boots and ensure no corrosion is present
  6.  
  7. Install the ignition module housing assembly with spark plug boots into position and tighten the ignition module-to-camshaft cover bolts to 89 inch lbs. (10 Nm)
  8.  
  9. Connect the EI module harness connector. Push in until a click is heard and pull back to confirm a positive engagement.
  10.  
  11. Position the outlet resonator/duct assembly into position

  12.  
  13. Connect the PCV fresh air vent hose assembly
  14.  
  15. Tighten the clamp at the throttle body assembly
  16.  
  17. Position the outlet resonator/duct assembly up with support bracket and install the push-pin.

  18.  
  19. Tighten the clamp at the air cleaner assembly.
  20.  
  21. Connect the IAT sensor connector
  22.  


  1. Disconnect the Intake Air Temperature (IAT) sensor connector.

  2.  
  3. Loosen the clamp at the air cleaner assembly.
  4.  
  5. Remove the push-pin attachment from the outlet resonator/duct assembly to support bracket.
  6.  
  7. Loosen the clamp at the throttle body assembly.

  8.  
  9. Remove the outlet resonator/duct assembly.
  10.  
  11. Disconnect the EI module electrical connector.



    Click image to see an enlarged view

    Fig. Resonator/duct assembly removed




    Click image to see an enlarged view

    Fig. Ignition Module attachment bolts

  12.  
  13. Remove the ignition module attachment bolts.
  14.  
  15. Remove the ignition module housing assembly with the spark plug boots from the spark plugs.

    WARNING

    To avoid getting water and debris into the spark plug holes, used compressed air and a shop rag to blow out each spark plug hole before plugs are removed.


  16.  
  17. Remove the spark plugs using a spark plug socket.
  18.  


To install:



NOTE
Do NOT coat spark plug threads with anti-seize compound. If anti-seize compound is used and spark plugs are over-torqued, damage to the cylinder head threads may result.





Click image to see an enlarged view

Fig. 2.2L engine with spark plugs removed

  1. Gap the spark plugs to 0.045 inch (1.1mm).
  2.  
  3. Install spark plugs and tighten to 15 ft. lbs. (20 Nm).



    Click image to see an enlarged view

    Fig. Apply dielectric compound to the spark plug boots

  4.  
  5. Apply dielectric compound to the spark plug boots and ensure no corrosion is present.
  6.  
  7. Install the ignition module housing assembly with spark plug boots into position and tighten the ignition module-to-camshaft cover bolts to 89 inch lbs. (10 Nm).
  8.  
  9. Connect the EI module harness connector. Push in until a click is heard and pull back to confirm a positive engagement.
  10.  
  11. Position the outlet resonator/duct assembly into position.
  12.  
  13. Connect the PCV fresh air vent hose assembly.
  14.  
  15. Tighten the clamp at the throttle body assembly.

  16.  
  17. Position the outlet resonator/duct assembly up with support bracket and install the push-pin.
  18.  
  19. Tighten the clamp at the air cleaner assembly.
  20.  
  21. Connect the IAT sensor connector.

  22.  


2.4L Engine

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove ignition coils. Refer to Ignition Coil Pack removal and installation.

    NOTE
    Make sure that any water and/or debris is blown out of the spark plug holes prior to removing the spark plugs.


  4.  

  5. Remove the spark plugs using a
    5
    /
    8

    inch spark plug socket.




    Click image to see an enlarged view

    Fig. Remove the ignition coils and then the spark plugs-2.4L engine

  6.  


To install:



WARNING
Do not coat spark plug threads with anti-seize compound. If anti-seize compound is used and spark plugs are over-torqued, damage to the cylinder head threads may result.



  1. Ensure the spark plugs are gapped to specification: 0.042 in. (1.06mm).

  2.  
  3. Install the spark plugs. Tighten the plugs to 15 ft. lbs. (20 Nm).
  4.  
  5. Install the ignition coils. Refer to Ignition Coil Pack removal and installation.
  6.  


3.5L Engine


WARNING
This engine has aluminum cylinder heads. Do not remove the spark plugs from a hot engine, allow it to cool first. Removing the spark plugs from a hot engine may cause spark plug thread damage or cylinder head damage.



  1. Remove the ignition coils on Bank 1 as follows:

    1. Remove the air cleaner outlet duct assembly.
    2.  
    3. Disconnect the electrical connectors.

    4.  
    5. Remove the engine coil bolts.
    6.  
    7. Remove the engine coils.
    8.  


  2.  
  3. Remove the ignition coils on Bank 2 as follows:

    1. Disconnect the electrical connectors.
    2.  
    3. Remove the engine coil bolt.
    4.  
    5. Remove the engine coils.

      WARNING
      Remove any water and debris from the spark plug holes before spark plug removal with compressed air.


    6.  


  4.  
  5. Remove the spark plugs with a spark plug socket.
  6.  
  7. Inspect the spark plugs.
  8.  


To install:

  1. Gap the spark plug, using a round wire type spark plug gap gauge. Adjust spark plug gap to 0.043 inch (1.1mm).

    WARNING
    DO NOT coat the spark plugs with anti-seize compound. Over-tightening could occur and damage to the cylinder head threads may result.


  2.  
  3. Install the spark plugs with a spark plug socket. Tighten the spark plugs to 13 ft. lbs. (18 Nm).
  4.  
  5. Install the ignition coils.
  6.  


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