The firing order for a 1985 Ford Ranger's engine depends on the engine size (and therefore the number of cylinders). There's no single answer. You need to specify the engine displacement (e.g., 2.0L, 2.3L, 2.8L, etc.) to determine the correct firing order.
Once you provide the engine size, I can try to find the firing order for you. However, a reliable repair manual specific to your Ranger's year and engine is the best resource for this information.
