[Image of a spark plug cap]
The cap is the part of the ignition system that connects the spark plug to the rest of the system. It is made of a rubber or plastic material and has a metal contact on the inside that connects to the spark plug. The cap also has a metal connector on the outside that connects to the ignition coil.
Firing Order
The firing order is the sequence in which the spark plugs fire. The firing order is different for each engine, and it is important to follow the correct firing order when installing spark plugs. The firing order for a V8 engine is as follows:
The firing order is typically written on the engine block or in the owner's manual.