1-3-5-2-6-4
This means that the spark plugs fire in that order, starting with cylinder 1 and ending with cylinder 4.
Here's how to identify the cylinders:
* Cylinder 1: Located at the front of the engine, closest to the radiator.
* Cylinder 3: Located on the same side as cylinder 1, but further back.
* Cylinder 5: Located on the other side of the engine, closest to the firewall.
* Cylinder 2: Located on the same side as cylinder 5, but further back.
* Cylinder 6: Located on the same side as cylinder 5, but closer to the front.
* Cylinder 4: Located on the same side as cylinder 1, but closer to the rear of the engine.
It's important to note that this firing order may vary slightly depending on the specific engine configuration. You can always consult your owner's manual or a reputable automotive repair manual for a definitive answer.