IGNITION SYSTEM INSPECTION

Note

In the following section, the terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10 °C (14 °F) to 50 °C (122 °F). "Hot" means approximately 50 °C (122 °F) to 100 °C (212 °F).


  1. INSPECT SPARK PLUG

    Note


    • Do not use a wire brush for cleaning.

    • Do not attempt to adjust the electrode gap of a used spark plug.


    1. A0138IBE01

      Check the electron.


      1. Using an megaohmmeter, measure the insulation resistance.

        Correct insulation resistance
        10 MΩ or more
        If the resistance is less than the specified value, proceed to step (e).

        Tech Tips

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

    2. A0135YG

      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.

      4. If the electron is dry, the spark plug is functioning. Proceed to step 2.

      5. If the electrode is damp, proceed to steps (c), (d) and (e).

      6. Install the spark plug.

    3. Check the spark plug for any damage on its threads and insulator.

      If there is any damage, replace the spark plug.

      Recommended spark plug
      DENSO
      K20HR11
    4. A0137I5

      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.)

      Note

      If adjusting the gap of a new spark plug, bend only the base of the ground electrode. Do not touch the tip. Never attempt to adjust the gap on a used plug.

    5. A0137DT

      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
      588 kPa (6 kgf/cm2, 85psi)
      Duration
      20 seconds or less

      Tech Tips

      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.