* Engine Orientation: Cylinder numbering can vary depending on how the engine is oriented in the vehicle.
* Firing Order: While the cylinder numbering may be consistent, the firing order (the sequence in which cylinders ignite) is essential for understanding how the engine works.
To help you find the information you need, please provide:
1. Engine Orientation: Is the engine facing the front of the vehicle, or towards the passenger/driver side?
2. Firing Order: Do you have the firing order for your 1998 Ford Explorer 4.0L engine?
Once you provide this information, I can help you figure out which cylinder is #1.
A helpful tip: Many engine diagrams and schematics are available online for specific vehicle models. You can use these diagrams to identify the cylinder numbering and firing order.
