Sedona EX V6-3.5L (2002)
Spark Plug: Technical Service Bulletins
Ignition System - Spark Plug/Ignition Coil Inspection
VOLUME
3
GROUP
Engine
NUMBER
022
MODEL
Sedona, Sorento Amanti
SUBJECT:
SIGMA 3.5 ENGINE SPARK PLUG & IGNITION COIL INSPECTION PROCEDURE
This bulletin provides information relating to unnecessary spark plug and ignition coil replacement on Sedona, Sorento and Amanti vehicles with Sigma
3.5 Engines. Proper inspection and testing procedures MUST be used to determine if the spark plugs and/or ignition (IC) coils are bad prior to replacing
them. Follow the procedures in this technical service bulletin to inspect and test the spark plugs and ignition coils.
SPARK PLUG CENTER ELECTRODE AND INSULATION RESISTANCE CHECK:
1.
Remove spark plug
2.
Inspect the spark plug comparing it to the following pictures. The condition of the spark plug electrode end is an indicator of general combustion
chamber condition.
