The firing order for the 2010 Infiniti QX56, which uses the VK56DE 5.6-liter V8, is 1-8-7-2-6-5-4-3. This sequence specifies the ignition timing order for the eight cylinders.
Engine overview
The 2010 QX56 is powered by Nissan/Infiniti's VK56DE V8 engine. It features a single short-block V8 with four valves per cylinder and coil-on-plug ignition. Understanding the firing order helps with diagnostics, ignition service, and timing checks.
Firing order for the VK56DE
Before listing the sequence, note that the cylinder numbers follow Infiniti/Nissan conventions for the VK56DE. The order shown here is the standard firing sequence used by this engine configuration in the 2010 QX56. Verify against the factory service manual if you’re working on a regional variant or a modified setup.
- Cylinder 1
- Cylinder 8
- Cylinder 7
- Cylinder 2
- Cylinder 6
- Cylinder 5
- Cylinder 4
- Cylinder 3
The listed order defines the sequence in which each cylinder’s spark plug fires during normal operation. When performing maintenance such as spark plug replacement or ignition coil service, ensure the correct coil leads or coil-on-plug wiring follows this sequence to preserve proper timing and engine balance.
Practical notes
Keep in mind that ignition timing is just one part of engine timing. If you replace spark plugs or ignition coils, follow torque specs and use anti-seize or dielectric compounds as recommended by Infiniti/Nissan. If you suspect a misfire related to timing, consult the service manual for cylinder-specific maps and any region-specific variations.
Summary
The 2010 Infiniti QX56’s VK56DE V8 fires in the order 1-8-7-2-6-5-4-3. This sequence is essential for proper ignition timing, diagnostics, and maintenance. For precise cylinder mapping and torque specs, always refer to the official Infiniti/Nissan service documentation.