To determine the firing order, you must know the specific engine code (found on a sticker under the hood or on the engine itself). Once you have the engine code, you can look up the firing order in a repair manual or online database specific to that engine.
The direction (clockwise or counterclockwise) is less important than the numerical sequence of the firing order itself. While the physical firing pattern might appear clockwise or counterclockwise depending on your viewpoint, the important information is the cylinder firing sequence (e.g., 1-8-4-3-6-5-7-2).
