IGNITION SYSTEM > INSPECTION

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NOTICE:

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

1. Check the electrode.
   
   

   1. Using a megaohmmeter, measure the insulation resistance.
      

      Correct insulation resistance:

      10 MΩ or higher
      

      If the resistance is less then the specified value, proceed to step (b).
      

      HINT:

      If a megaohmmeter is not available, perform the following simple inspection instead.

2. Alternative inspection method:
   
   

   1. Quickly accelerate the engine to 4,000 rpm 5 times.
      

   2. Remove the spark plug.
      

   3. Visually check the spark plug.
      

      Result:

      Electrode condition	Next step
      Dry	Go to next step
      Wet	Proceed to step (c)

   4. Reinstall the spark plug.
      

3. Check the spark plug for any damage to its threads and insulator.
   If there is any damage, replace the spark plug.
   

   Recommended spark plug: 

   DENSO made	SK20R11
   NGK made	IFR6A11

4. Check the spark plug electrode gap.
   

   Maximum electrode gap for used spark plug:

   1.3 mm (0.051 in.)
   

   If the gap is greater than the maximum, replace the spark plug.
   

   Correct electrode gap for new spark plug:

   1.0 to 1.1 mm (0.039 to 0.043 in.)
   

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

   Air pressure:

   Blow 588 kPa (6 kgf/cm², 85 psi)
   

   Duration:

   20 seconds or less
   

   HINT:

   If there are traces of oil, remove them with gasoline before using the spark plug cleaner.