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    Ignition Coil Operation

    August 2022

    Coil-on-plug assemblies are designed to convert a low voltage (primary side) to a high voltage (secondary side) to fire the spark plugs. They perform the functions of both the ignition coil, which creates the spark energy, and the spark plug wire set, which delivers the high-voltage energy to the spark plug. Today's coil-on-plug assemblies come in a variety of physical and wiring configurations.

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  • Variable Valve Timing (VVT) Operation

    August 2022

    Variable Valve Timing (VVT) systems help reduce emissions and maximize engine performance and fuel economy. The VVT Solenoid (Oil Control Valve) meters the oil flow to control the actuation of the VVT Sprocket (Actuator or Phaser). The VVT Sprocket mechanically shifts the position of the camshaft. Here are a few tips for testing.

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