Spark plug wiring order on 4.0L V6 Ford Ranger?

The firing order for a 4.0L V6 Ford Ranger engine is 1-5-3-6-2-4. However, it's crucial to verify this with your specific year and engine code. The firing order can sometimes vary slightly depending on the year of manufacture.

To be absolutely certain:

1. Check your owner's manual: This is the most reliable source.

2. Look for a sticker under the hood: Many vehicles have a sticker listing the firing order.

3. Consult a repair manual specific to your year and model: Chilton's, Haynes, or a factory service manual will have this information.

Using the wrong firing order can lead to poor engine performance, misfires, and potential damage. Always double-check before making any changes to your spark plug wiring.