Coil packs play a pivotal role in your vehicle's ignition system, but what exactly are they, and how do they work? Here's ...

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 ...

When Ford introduced the SEFI 5.0L High Output Mustang in 1986 many predicted the end of the tunable engine. Ironically it was the beginning of a new era of super-tunable small-block Fords that would ...

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 ...

The Chevrolet LS series small-block motor is by far the most popular modern motor within the hot rod community. When it comes to engine swaps the venerable small-block Chevrolet package simply fits in ...

You've got an intake, an exhaust, and a programmer but are still hungry for more bolt-on performance. Most people turn attention to the ignition next. To get more ...

Just like spark plugs, ignition coils can wear down and become faulty over time. There are many common signs that an ignition coil is getting bad, but one obvious sign is an engine misfire, typically ...

Recently, my son-in-law's 2005 Acura 3.2 began to misfire. While changing the spark plugs, the end of the ''coil on plug'' wire for spark plug No. 3 came off, leaving the coil in my hand and the ...