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Home >> Chevrolet >> 2006 >> Impala Police, 3.5 K >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 3.5L - Introduction (2 Of 2) >> Repair Instructions >> Spark Plug Replacement >> Installation Procedure

Installation Procedure

NOTE: It is important to check the gap of all new and reconditioned spark plugs before installation. Pre-set gaps may have changed during handling. Use a round wire feeler gauge to be sure of an accurate check, particularly on used plugs. Installing plugs with the wrong gap can cause poor engine performance and may even damage the engine.
    Fig 1: Installing The Spark Plugs
    GM1587748Courtesy of GENERAL MOTORS CORP.
  1. Gap the NEW spark plugs. Refer to Ignition System Specifications .
    NOTE: Refer to Fastener Notice .
  2. Install the spark plugs.

    Tighten:  Tighten the plugs to 15 N.m (11 lb ft).

  3. Fig 2: Installing The Right Side Spark Plug Wires To The Spark Plugs
    GM1608803Courtesy of GENERAL MOTORS CORP.
  4. Install the right side spark plug wires to the spark plugs, if required.
  5. Fig 3: Installing The Left Side Spark Plug Wires To The Spark Plugs
    GM1608802Courtesy of GENERAL MOTORS CORP.
  6. Install the left side spark plug wires to the spark plugs, if required.
  7. Install the intake manifold cover, if required. Refer to Intake Manifold Cover Replacement .
  8. Install the air cleaner outlet duct, if required. Refer to Air Cleaner Outlet Duct Replacement .