Why does your ford ranger XL 2.3 L engine have 8 spark-plug wires for only a 4 cylinder engine?

A Ford Ranger XL 2.3L engine only has four spark plugs, not eight. Therefore, it would only have four spark plug wires, one for each cylinder. If you're seeing eight wires, something is seriously wrong – either there's a miscounting error, wires are connected incorrectly, or there's a significant modification or problem with the engine. It's highly unlikely a factory-standard 2.3L four-cylinder engine would have eight spark plug wires.