IGN4 - Check Secondary Display (Continued)
Normal Firing Voltage:
^ Are both the evenness of the spark plug firing voltage too wide and the average value of spark plug firing voltage greater than the normal value of 28KV?
YES -- Problems affecting all cylinders:
Check for wide spark plug gaps at all cylinders, (usually from worn electrodes due to high mileage).
Inspect cap and rotor for problems causing excessive cap-to-rotor gap.
Go to IGN11. IGN11 - Check Spark Plug Wire Resistance
NO -- Go to IGN5. IGN5 - Check Secondary Display (Continued)