Supplied Voltage Requirements
INFLUENCE OF ACCELERATION ON SUPPLIED VOLTAGE
The leaner the air/fuel mixture in the combustion chamber is at acceleration, the higher the requirement for supplied voltage.
Spark plugs cause the requirement for supplied voltage by the ignition system to permanently increase over use.
Used spark plugs are hard to fire as the gaps wear out and insulation properties of the ceramic are compromised.
When the requirement for supplied voltage exceeds the possibilities of the ignition system, it may be time to change the spark plugs.