The firing order for a 1991 Subaru Loyale with a 1.8L engine is 1-3-2-4. This means that the spark plugs fire in the following order:
1. Cylinder 1
2. Cylinder 3
3. Cylinder 2
4. Cylinder 4
The firing order is important because it ensures that the engine runs smoothly. If the firing order is incorrect, the engine will not run properly and may even damage itself.
