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NOTE: Note foam strip on bolt threads. This foam is used only to retain the bolts to sensors for plant 3. Install and tighten mounting bolt. Refer to torque specification. 4. Install electrical connector to sensor. SPARK PLUG DESCRIPTION Resistor type spark plugs are used on all engines. Sixteen spark plugs (2 per cylinder) are used with 5.7L V-8 engines. REMOVAL 3.7L V-6 Each individual spark plug is located under each ignition coil. Each individual ignition coil must be removed to gain 1. Remove necessary air filter tubing at throttle body. 2. Prior to removing ignition coil, spray compressed air around coil base at cylinder head. 3. Prior to removing spark plug, spray compressed air into cylinder head opening. This will help prevent foreign material from entering combustion chamber. 4. Remove spark plug from cylinder head using a quality socket with a rubber or foam insert. Also check condition of ignition coil o-ring and replace as necessary. 5. Inspect spark plug condition. Refer to Diagnostics and Testing - Spark Plug Conditions. 4.7L V-8 Each individual spark plug is located under each ignition coil. Each individual ignition coil must be removed to gain 1. Remove necessary air filter tubing at throttle body. 2. Prior to removing ignition coil, spray compressed air around coil base at cylinder head. 3. Prior to removing spark plug, spray compressed air into cylinder head opening. This will help prevent foreign material from entering combustion chamber. 4. Remove spark plug from cylinder head using a quality socket with a rubber or foam insert. Also check condition of ignition coil o-ring and replace as necessary. 5. Inspect spark plug condition. Refer to Diagnostics and Testing - Spark Plug Conditions. 5.7L V-8 Eight of the 16 spark plugs are located under an ignition coil; the other 8 are not. If spark plug being removed is Before removing or disconnecting any spark plug cables, note their original position. Remove cables one-at-a-time. Before installing spark plug cables to either the spark plugs or coils, apply dielectric grease to inside of boots. 1. Remove necessary air filter tubing at throttle body. 2. Prior to removing ignition coil (if coil removal is necessary), spray compressed air around coil base at cylinder head cover. 3. Prior to removing spark plug, spray compressed air into cylinder head opening. This will help prevent foreign material from entering combustion chamber. 4. Remove spark plug from cylinder head using a quality socket with a rubber or foam insert. 8I - 34 IGNITION CONTROL - SERVICE INFORMATION DR/DH |