Mazda MX-3 silhouetteMX-3

IGNITION SYSTEM

G-25prose procedure

Spark plug R/I illustrations distinguish B6 DOHC and K8 DOHC engines.

Continued from G-24
Specificationat 20°C {68°F}
16 kΩ per 1 m {3.28 ft}

High-Tension Lead Inspection (cont.)

  1. 2
    If not as specified, replace the high-tension lead.

SPARK PLUG

Removal / Installation

  1. 1
    Remove and install the high-tension leads carefully.
    Caution: Pulling on the wire part of the spark plug lead may break it. To remove the lead, pull only on the boot.
    B6 DOHC: hands pulling on a spark plug high-tension lead. The illustration marks pulling on the wire part with an X (wrong) and the correct boot pull. Labeled 'B6 DOHC'.
  2. 2
    Remove and install the spark plug with a plug socket.
    Caution: To avoid breaking the spark plug, be sure to fit the socket squarely over it.
    Two spark plugs in plug sockets shown side by side: left marked X (socket not fitted squarely), right marked with circle (socket fitted squarely). Labeled 'SOCKET'.
  3. 3
    Apply anti-seize compound or molybdenum-based lubricant to the spark plug threads.
  4. 4
    Tighten the spark plug to the specified torque.
spark plug
15 - 22N·m

Spark Test

Spark Test

  1. 1
    Remove the spark plug.
  2. 2
    Connect the spark plug to a high-tension lead.
  3. 3
    Hold the high-tension lead with insulated pliers 5—10 mm {0.20—0.39 in} from a ground.
    Spark test: a spark plug held with insulated pliers near a ground while cranking the engine to verify a strong blue spark.
  4. 4
    Crank the engine and verify that there is a strong blue spark. If not, replace the spark plug or high-tension lead as necessary.
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