To see the firing order for a 2000 Mercury Sable 3.0 liter engine?

The firing order for a 2000 Mercury Sable with a 3.0-liter engine is 1-4-2-5-3-6. This means that the cylinders fire in that specific sequence, starting with cylinder 1. For reference, the cylinder numbering typically follows a configuration where the front of the engine is considered the front of the vehicle, with cylinders arranged in a V formation. Always consult the vehicle's service manual for detailed diagrams and additional information.