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Ignition Spark Test

  1. Remove spark plugs. See SPARK PLUG REMOVAL AND INSTALLATION .
  2. Inspect spark plugs. See SPARK PLUG INSPECTION .
    WARNING: If this test is performed without disconnecting the injector couplers, a spark from a plug may ignite fuel vapor coming out of the spark plug holes during the test, causing a fire or explosion. Be sure to disconnect the injector couplers from the injectors before performing this test.
    NOTE: For identification of each cylinder, refer to PRECAUTIONS FOR IDENTIFICATION OF CYLINDER .
  3. Disconnect injector connectors.
  4. Connect ignition coil connector (3) to ignition coil assembly.
  5. Connect spark plug (2) to ignition coil assembly (1), and ground spark plug.
  6. Crank engine and check if each spark plug produces sparks.
    Fig 1: Connecting Spark Plug To Ignition Coil Assembly And Ground Spark Plug
    G06868222Courtesy of SUZUKI OF AMERICA CORP.
  7. If any spark plug does not produce sparks, check ignition system. See IGNITION SYSTEM CHECK .
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