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321 Centreville Ave.
Belleville, IL 62220

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Today’s computerized cars are amazing! They can take an engine and keep it running, smoothly I might add, until the last minute. This vehicle was towed in because it died and would not restart.  No previous issues with drive-ability.  Diagnosis determined it to be a failed ignition system; ignition coil failed.  The “root cause” was worn spark plugs.  The spark plug gap was so badly worn (see photo – worn plug on left and new on right) that the computer had to adjust fuel, timing and voltages to keep it running correctly.  These types of failures occur when the on board computer runs out of adjustments or a component calls it quits.  When was the last time you changed your spark plugs?

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