The coil pack is responsible for providing electrical power to the spark plugs, which ignite the fuel mixture in the cylinders. Each coil pack is typically connected to two spark plugs, so the cylinder firing order determines which cylinders are fired by each coil pack.
In a 4-cylinder engine with a coil-on-plug ignition system, each coil pack will be connected to one spark plug in cylinder 1 and one spark plug in cylinder 3. The other coil pack will be connected to one spark plug in cylinder 4 and one spark plug in cylinder 2.
It is important to note that the cylinder firing order and coil pack configuration may vary from engine to engine. Always refer to the vehicle's service manual for specific information about the cylinder firing order and coil pack configuration for your particular engine.
