How Often Should Spark Plug Wires Be Replaced?

[DelAustin]

Spark plug wires generally need to be replaced approximately every 40,000 kilometers. Below are detailed explanations about spark plug wires: 1. Function: Spark plug wires serve as the medium through which the ignition coil transfers energy to the spark plugs. When experiencing symptoms such as engine shaking or misfiring, it is crucial to inspect the spark plug wires and replace them if necessary. 2. Composition: Automobile spark plug wires, commonly referred to as distributor wires, transmit the high-voltage spark from the distributor to the spark plugs, enabling ignition and combustion within the cylinders to drive the engine. Spark plug wires primarily consist of four parts: conductive material, insulating rubber, ignition coil connectors, and spark plug connectors. Some spark plug wires are also wrapped with a layer of heat-resistant material to prevent damage from excessive heat.