What causes intermittent cylinder misfiring?

1 Answers
DeAnnie
07/30/25 3:18am
Intermittent cylinder misfiring can be caused by: 1. Poor contact between the spark plug and ignition coil; 2. Issues with the ignition coil circuit, which requires inspection when encountered. The ignition system of a car engine mainly consists of spark plugs and ignition coils. Spark plugs are wearable components that need regular replacement. Prolonged use can lead to increased electrode gap, affecting spark plug performance. Although ignition coils are not considered wearable parts, prolonged exposure to high temperatures can also cause failures. The ignition coil converts 12V voltage into thousands or even tens of thousands of volts, providing sufficient ignition energy for the spark plug.
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