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Home >> Chevrolet >> 2004 >> Tracker 4WD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - 2.5L (LE8) (Introduction) >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure
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Installation Procedure

  1. Check for the correct spark plug gap and adjust as necessary. Refer to Ignition System Specifications .
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the spark plugs (3) into the cylinder head.

    Tighten:  Tighten the spark plug to 25 N.m (18 lb ft).

  3. Install the ignition coil (2) to each spark plug and secure with the bolt (1).

    Tighten:  Tighten the ignition coil bolts to 10 N.m (89 lb in).

  4. Connect the ignition coil electrical connectors.
    5. Fig 1: View Of Ignition Coil, Spark Plug & Bolt
    GM677343Courtesy of GENERAL MOTORS CORP.
  5. Install the ignition coil cover (2) to the valve cover (1).
  6. Secure the ignition coil cover (2) with the two fasteners.

    Tighten:  Tighten the two fasteners to 3 N.m (26 lb in).

    7. Fig 2: View Of Ignition Coil Cover Fasteners & Valve Cover
    GM739064Courtesy of GENERAL MOTORS CORP.
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