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Suzuki Aerio, Verona 2002-06

Spark Plugs

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Inspection



  1. Check spark plugs for the following:
    1. Broken insulator
    2.  
    3. Worn electrode
    4.  
    5. Carbon deposits
    6.  
    7. Damaged or broken gasket
    8.  
    9. Condition of the porcelain insulator at the tip of the spark plug
    10.  

  2.  
  3. Replace as necessary
  4.  


CAUTION
When service the iridium / platinum spark plugs (slender center electrode type plugs), i.e. IFR5J11, IFR6J11, do not touch the center electrode to avoid damage to it. The electrode is not strong enough against mechanical force as it is slender and its material is not mechanically tough.


CAUTION
Do not clean or adjust gap for the iridium / platinum spark plugs.

Check the following:



Electrode wear
 
Carbon deposits
 
Insulator damage
 
Air gap
 

For iridium / platinum spark plugs, replace them with specified new plugs, if any abnormality is found. For spark plug other than iridium / platinum, clean, adjust or replace them with specified new plugs, if any abnormality is found.

Spark plug air gap: -a- 0.040-0.043 inch (1.0-1.1 mm)

Spark plug type:



NGK: BKR5E11/BKR6E11/IFR5J11 (iridium/platinum spark plug)/IFR6J11 (iridium/platinum spark plug)
 
DENSO: SK16PR11/SK20PR11/K20PR-U11/K16PR-U11
 


NOTE
NGK IFR5J11 is highly recommended for better engine starting performance under -25 °C (-13 °F).

Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove spark plug wire from the spark plug.
    NOTE
    Pull on the spark plug wire boot when removing the spark plug wire to avoid damage to the wire.

  4.  
  5. Clean loose debris away from area of spark plug to keep contaminants from entering engine when spark plug is removed.
  6.  
  7. Remove the spark plug using a spark plug socket and wrench.
  8.  

To install:

  1. Remove engine cover from cylinder head cover.
  2.  
  3. Remove ignition coil by performing the following
    1. Disconnect ignition coil coupler.
    2.  
    3. Remove ignition coil bolt (1).
    4.  
    5. Pull out ignition coil.
    6.  

  4.  
  5. Remove the spark plug (2).

    Click image to see an enlarged view

    Fig. Removing ignition coil and spark plugs

  6.  

To install:

  1. Install spark plug (2). Tighten to 18 ft. lbs. (25 Nm).
  2.  
  3. Install ignition coil (1) by performing the following:
    1. Install the ignition coil (2) securely.
    2.  
    3. Tighten ignition coil bolt. Then connect the ignition coil coupler.
    4.  

  4.  
  5. Install engine cover to cylinder head cover.
  6.  

5- & 6-Cylinder Engines
  1. Be sure the spark plug gap is set to 0.030 inch (0.763mm).
  2.  
  3. Carefully install the spark plug and tighten to 20-22 ft. lbs. (27-29 Nm).
  4.  

8-Cylinder Engine
  1. Be sure the spark plug gap is set to 0.028 in. (0.712mm).
  2.  
  3. Carefully install the spark plug and tighten 18 ft. lbs. (24 Nm).
  4.  

 
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