This means the spark plugs fire in that order, starting with cylinder #1 and ending with cylinder #2.
Here's how to identify the cylinders:
* #1 Cylinder: This cylinder is usually located at the front of the engine, on the passenger side (right side when facing the engine).
* #2 Cylinder: This cylinder is located directly behind cylinder #1.
* #3 Cylinder: This cylinder is located behind cylinder #2.
* #4 Cylinder: This cylinder is located behind cylinder #3.
* #5 Cylinder: This cylinder is located at the front of the engine, on the driver's side (left side when facing the engine).
* #6 Cylinder: This cylinder is located directly behind cylinder #5.
* #7 Cylinder: This cylinder is located behind cylinder #6.
* #8 Cylinder: This cylinder is located behind cylinder #7.
Important Note: This firing order is specific to the 1978 Cadillac 425ci engine. It's crucial to double-check this information for the specific engine you're working on, as firing orders can vary slightly depending on the year and model.
