* Cylinder Numbering Conventions: There are different ways to number cylinders in engines, and manufacturers don't always follow a universal standard. Some use a "firing order" system, while others number cylinders sequentially from front to back.
* Engine Variations: Even within the same model year and engine size, Ford could have used different cylinder numbering schemes for specific engine configurations.
How to Find the Correct Numbering:
1. Consult the Engine Manual: The most reliable source of information is your vehicle's owner's manual or a repair manual specific to your 1998 Ford Expedition 5.4L engine.
2. Locate the Engine Tag: There's often an identification tag attached to the engine block or near the valve cover. This tag might provide a cylinder numbering diagram.
3. Refer to Ford Service Information: You can contact a Ford dealership or an authorized Ford service center. They have access to technical service bulletins and other documentation that could clarify cylinder numbering for your specific engine.
4. Online Resources: Search online forums or websites dedicated to Ford Expedition repair and maintenance. Other owners or mechanics might have encountered the same question and shared helpful information.
Remember, it's important to consult reliable sources to ensure you're working with the correct cylinder numbering for your specific vehicle.
