The 2022 Infiniti Q50 delivers sport sedan performance with the powerful 3.0L twin-turbocharged VR30 V6 engine. When your Q50 displays a P0304 code indicating a cylinder 4 misfire, understanding this modern powertrain helps guide accurate diagnosis.
Understanding P0304 in the Q50
The Q50's 3.0L VR30 twin-turbo V6 is available in multiple power levels. Cylinder 4 is located on the rear of the left bank of the V6. The engine control module monitors combustion events through crankshaft position analysis.
Twin-Turbo Considerations
The twin-turbo setup creates high combustion pressures that accelerate spark plug wear. Direct injection technology can contribute to carbon buildup on intake valves over time. The boost system must maintain proper pressure for correct operation.
Diagnostic Approach
Access the cylinder 4 ignition coil on the left bank. Inspect spark plug electrode condition. Check for boost leaks in the charge piping. Verify no vacuum leaks exist in the intake system.
Resolution Process
Replace spark plugs with Nissan/Infiniti specifications. Test ignition coil output. If carbon buildup is suspected, intake valve cleaning may be warranted.