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Spark Plug: Installation

WARNING: This page is about a different car, the 2004 Dodge Intrepid, 2004 Chrysler Intrepid, 2004 Chrysler Concorde, and 2004 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.

Always remove the ignition coil assembly by grasping at the spark plug boot, turning the assembly 1/2 turn and pulling straight back in a steady motion.

  1. To avoid cross threading, start the spark plug into the cylinder head by hand.
  2. 3.5L engines tighten spark plugs to 28 N.m (20 ft. lbs.) torque, 2.7L engine tighten spark plugs to 17.6 N.m (13 ft. lbs.).
  3. Install ignition coil assembly onto spark plug.
  4. Install coil screws and tighten: 2.7L engine to 6.2 N.m (55 in.lbs.), 3.5L engines to 6.7 N.m (60 in.lbs.).
  5. Connect the electrical connector.
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