This substance is an insulator; if it contaminates the gap between the center and ground electrodes, it can disrupt the spark, leading to poor engine performance or misfires. Applying a thin layer of dielectric grease to the contact points inside the cap protects the electrical system from the harsh environment under the hood.
Dielectric Grease Spark Plug Boot Maintenance: Essential Tips and Techniques
This practice is particularly important in older vehicles or climates with high moisture levels, as it helps maintain the integrity of the spark distribution sequence. Instead, dielectric grease acts as a protective barrier.
As a best practice, reapplying a small amount of grease during a major tune-up, such as when replacing wires or the distributor cap, ensures optimal protection for the lifespan of the ignition components. Under the hood, these components are exposed to heat and humidity, which can lead to arcing and misfires.
Dielectric Grease Spark Plug Boot Maintenance: Protecting Your Connections
By keeping the connection lubricated and moisture-free, the grease ensures maximum voltage transfer from the ignition system to the combustion chamber. Insert the terminal, ensuring the grease squeezes out slightly to ensure full coverage.
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