Firing order for a 1989 Isuzu pickup?

The firing order for a 1989 Isuzu pickup with a 2.3L or 2.6L engine is 1-3-4-2. This means that the cylinders fire in the sequence of 1, 3, 4, and 2. It's important to ensure the ignition system is set correctly to this firing order for optimal engine performance. Always refer to the vehicle's service manual for specific details related to your engine model.