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VIDEO: What Makes For A High-Quality Ignition Coil?

No matter the style of the ignition coil, where it is mounted, or how many cylinders it provides with spark, all coils have zero moving parts and sealed. Less expensive ignition coils use resins that are less resistant to vibration, heat and endless heat cycles under the hood. Taking a risk on a cheap ignition coil from an unknown source can put an engine at risk.

Coil On Plug Ignition: The Wired Differences

For late-model vehicles, the norm is one ignition coil per cylinder, commonly known as coil on plug. The task of providing voltage potential to each spark plug is performed so reliably that it’s easy to take for granted.

VIDEO: 5 Tips For Ignition Coil Replacement

When replacing an ignition coil, there are a few things to keep in mind that you might overlook that prevent premature failure.

VIDEO: Top 2 Reasons For Ignition Coil Failure

In a new episode of Tech Test Prep, Carley Millhone shares what you need to know about ignition coil failure to pass the A8.

What Kills An Ignition Coil?

All ignition coils transform a low-voltage/high-current power in the primary to high-voltage/low-current energy in the secondary.

VIDEO: Ignition Coil Circuit Testing

Doug Kaufman explains the proper diagnostic process for ignition coils in order to avoid swapping parts.

VIDEO: Ignition Coil Misfire Diagnostics

Andrew Markel talks ignition coil misfires, and the engine components to check when it happens.

VIDEO: Connection Between Oil Changes And Low-Speed Pre-Ignition

Andrew Markel explains low-speed pre-ignition, how this condition can damage engine components, and how specified oil can help prevent it.

VIDEO: Understanding Secondary Ignition Waveforms

Andrew Markel picks apart secondary ignition waveforms and how burn time can reveal the condition of a spark plug.

Honda Ignition Service Tips

Most Honda original equipment spark plugs have a life of more than 100,000 miles thanks to electrodes that contain precious metals like platinum and iridium. If the plugs fail sooner than the recommended interval, first solve any related problems before installing new plugs.