Here's how the spark plugs are numbered:
1. Passenger side front
2. Passenger side rear
3. Driver side rear
4. Driver side front
5. Passenger side front
6. Passenger side rear
7. Driver side rear
8. Driver side front
Important:
* Always consult your owner's manual or a reliable repair manual for the most accurate information specific to your vehicle.
* It's also a good idea to double-check the firing order using a spark plug wire diagram or a mechanic's diagnostic tool.
By understanding the firing order and spark plug placement, you can ensure your engine is running smoothly and efficiently.