IGN7 - Check Secondary Display (Continued)

High Firing Voltage:

^ Is there consistently high spark plug firing voltage In one or more cylinders?

YES -- Check for problems affecting some cylinders:

- Spark plug wire(s) are firmly connected to distributor cap or spark plug.

- Wide spark plug gap(s).

- Open plug wire(s).

- Valves

- Fuel injectors

- Compression

- Vacuum leaks

NO -- GO to IGN8. IGN8 - Check Secondary Display (Continued)