What is the firing order for 4.6 engine?

The firing order for a 4.6L Ford Modular engine depends on whether it's a 2-valve or 3-valve engine. There are slight variations within those categories as well depending on the specific application (car, truck, etc.). However, the most common firing orders are:

* 2-Valve 4.6L: 1-5-4-2-6-3-7-8

* 3-Valve 4.6L: 1-5-4-8-6-3-7-2

It's crucial to verify the exact firing order for your specific 4.6L engine using your vehicle's owner's manual or a reliable online resource that specifies the year, make, and model of your vehicle. Using the incorrect firing order can cause serious engine damage.