To find the correct information, you need to identify your engine by:
* Checking the engine block: The engine type (e.g., 4.9L I6, 5.0L V8, 5.8L V8) is usually cast into the engine block itself. This is the most reliable method.
* Looking at your vehicle's paperwork: Your owner's manual or vehicle registration should specify the engine type.
* Checking the sticker under the hood: There's often a sticker near the radiator or elsewhere under the hood listing engine specifications.
Once you know the engine type, you can find a reliable source like a repair manual (Haynes, Chilton) or an online automotive database (like a Ford parts website) to find the firing order and cylinder number location relative to the spark plugs. Do not rely on generic information found online without verifying it against your specific engine type.
The firing order isn't directly related to "block numbers" in a way that would be consistently helpful. The firing order describes the sequence in which the spark plugs ignite, while the block numbers are usually cast into the block itself to denote the individual cylinders. You need both pieces of information to properly install spark plugs.
