An ignition coil takes voltage from the battery and multiplies it to create a spark at the spark plugs, which in turn ignites the engine. Cars have been using some form of the coil ignition system for ...

A battery in a traditional car cannot directly create engine spark. It’s only rated at 12 volts, after all, so it needs a little help boosting the signal to the spark plugs. To make that happen, a car ...

What’s the fastest way to a mental breakdown in your garage, and why is it an ignition issue? No doubt, that stress headache comes on strong when your car was running a minute ago, whereas now it’s ...

We may receive a commission on purchases made from links. Is your car misfiring, having trouble starting, or idling rough? Are you wondering if the problem is one of your coil packs? If you're like ...

Autoblog aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission. This spark plug tester features an innovative dual-socket design, ...

Horse Sense:There's more to a major tune-up than simply throwing in fresh spark plugs. The entire secondary ignition should be checked and replaced if needed. Using a complete system such as the 5.0 ...

It's springtime! Time to start working on your project car, learn a new wrenching skill, discover what everything is under the hood (and how it works), or just spruce up your daily driver. All month, ...

A brief underhood inspection confirms that all the vacuum hoses are on and that none of them have been burned open by leaning against the exhaust manifold. You've touched every sensor connection to ...

The forefathers of speed could only dream of street cars that were both reliable and capable of 800 hp or more—funny thing is, these days it is commonplace. We can thank technology’s rapid advance ...

The spark plug was a key invention in the history of the internal combustion engine, allowing combustion to be easily controlled and engines to rev faster than messy earlier designs. Mid-century cars ...

Newer engines like as the Coyote, LS, and G3 Hemi have an ignition coil for each cylinder. This modern approach is called "coil near plug" or CNP, and it replaces the distributor with eight small ...