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)