The firing order for a Ford 300 straight-six engine for a distributor is 1-5-3-6-2-4. This means that the spark plugs will fire in the following order:
1. Spark plug 1
2. Spark plug 5
3. Spark plug 3
4. Spark plug 6
5. Spark plug 2
6. Spark plug 4
The firing order is important because it ensures that the spark plugs fire at the correct time in relation to the piston's movement. If the firing order is incorrect, the engine will not run properly.
Here is a diagram of the firing order for a Ford 300 straight-six engine for a distributor:
[Image of a diagram of the firing order for a Ford 300 straight-six engine for a distributor]
In the diagram, the numbers 1-6 represent the spark plugs. The arrows show the direction of the spark plug wires.