Spark plugs have a pretty predictable life cycle, but ignition coils can be harder to track. Here's how to tell if an ...

Most people think you can check a small engine’s ignition system by removing the spark plug and grounding it while cranking the engine and watching for a spark. Nope. That just confirms that the spark ...

The ignition coil converts the vehicle’s 12 volts to the more than 10,000 volts required to produce an effective spark in the spark plugs, which in turn ignite the air-fuel mixture in an engine ...

That’s why it’s important to also be mindful of where you mount a canister coil under the hood of your car. Q: Can I drive with a bad ignition coil?

An ignition coil has two windings, the first using between 150 and 300 turns of wire and the second boosting this value by about 100 times (15,000 to 30,000 turns).

The “boot” is what connects the ignition coil to the spark plug. It is similar to a spark plug wire but isn’t visible. Over time, the rubber deteriorates and loses its insulation quality.

Ignition systems have not changed a whole lot in the last 50 years. Most systems rely upon a distributor and an ignition coil to create the necessary spark energy and time its delivery to the ...