SECTION 303-07B: Engine Ignition — 5.0L (4V)
2014 Mustang Workshop Manual
REMOVAL AND INSTALLATION
Procedure revision date: 01/07/2013

Spark Plugs

Removal and Installation

NOTICE: Do not remove the spark plugs when the engine is hot or cold soaked. Spark plug thread or cylinder head damage can occur. Make sure the engine is warm (hand touch after cooling down) prior to spark plug removal.

  1. Remove the ignition coil-on-plug. For additional information, refer to Ignition Coil-On-Plug in this section.
  1. NOTICE: Only use hand tools when removing or installing the spark plugs, or damage may occur to the cylinder head or spark plug.

    NOTE: Use compressed air to remove any foreign material in the spark plug well before removing the spark plugs.

    Remove the spark plug.
  1. Inspect the spark plug. For additional information, refer to Section 303-00 .
  1. NOTICE: The spark plug gap is not adjustable. Damage can occur to the ceramic or iridium center wire if the gap is adjusted. Replace the spark plug if the gap is out of specification.

    To install, reverse the removal procedure.