Camry 2007

Spark Plugs

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Inspection




NOTE
Do not use a wire brush for cleaning. Do not attempt to adjust the electrode gap of a used spark plug.

  1. Check the electrode:
  2.  
  3. Using a mega ohmmeter, measure the insulation resistance. Correct insulation resistance: 10 M- or higher.
  4.  
  5. Alternative inspection method:
    1. Quickly accelerate the engine to 4,000 rpm 5 times.
    2.  
    3. Remove the spark plug.
    4.  
    5. Visually check the spark plug.
    6.  
    7. If the electrode is dry, the spark plug is functioning properly. Check the spark plug for any damage to its threads and insulator.
    8.  
    9. If there is damage, replace the spark plug.
    10.  
    11. Replacement spark plugs: DENSO SK20R11 or NGK IFR6A11.
    12.  

  6.  
  7. Check the spark plug electrode gap: Electrode gap for a new spark plug: 0.039 to 0.043 inches (1.0 to 1.1 mm). Maximum electrode gap: 0.051 inches (1.3 mm). If the gap is greater than the maximum, replace the spark plug.
    NOTE
    Only use the spark plug cleaner when the electrode is free of oil. If the electrode has traces of oil, use gasoline to clean off the oil before using the spark plug cleaner.

  8.  
  9. Clean the spark plugs. If the electrode has traces of wet carbon, clean the electrode with a spark plug cleaner and then dry it.
  10.  

Removal & Installation



2.4L Engine

Specific to:

Toyota Camry 2007-2008

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the plastic engine cover.
  4.  
  5. Disconnect the 4 ignition coil connectors and remove the 4 bolts and ignition coils.
  6.  
  7. Using a 16 mm (0.63 in.) spark plug wrench, remove the 4 spark plugs.
  8.  
  9. Installation is the reverse of removal.
    1. Torque the ignition coils to 66 inch lbs. (7.5 Nm) and the spark plugs to 13 ft. lbs (18 Nm).

      Click image to see an enlarged view

      Fig. Removing spark plugs-2.4L engines

    2.  

  10.  

3.5L Engine

Specific to:

Toyota Camry 2007-2008

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the V-bank cover.
  4.  
  5. Remove the intake air surge tank.
  6.  
  7. Disconnect the 6 ignition coil connectors.
  8.  
  9. Remove the 6 bolts and 6 ignition coils.
  10.  
  11. Using a 16 mm (0.63 in.) plug wrench, remove the spark plugs.
  12.  
  13. Installation is the reverse of removal, noting the following:
    1. Torque the ignition coils to 66 inch lbs. (7.5 Nm) and the spark plugs to 13 ft. lbs (18 Nm).

      Click image to see an enlarged view

      Fig. Removing spark plugs-3.5L engines

    2.  

  14.  

 
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