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Home >> Pontiac >> 2005 >> Grand Prix Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 3.8L - Introduction >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure

Installation Procedure

  1. Measure the spark plug gap on the spark plugs to be installed. Compare the measurement to the gap specifications. Refer to Ignition System Specifications . Correct as necessary.
    2. Fig 1: Identifying Spark Plug & Wire
    GM47610Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the spark plugs to the engine.

    Tighten: 

    • If installing the spark plugs to a new cylinder head tighten the plugs to 27 N.m (20 lb ft).
    • If installing the spark plugs to an existing cylinder head tighten the plugs to 15 N.m (11 lb ft).

  3. Connect the spark plug wires to the spark plugs. Refer to Spark Plug Wire Replacement .
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