The P0304 code in your 2024 Kia Telluride indicates the engine control module has detected persistent misfires in cylinder 4. The premium three-row SUV's proven 3.8L V6 requires understanding of V6 architecture for effective diagnosis and repair of this combustion problem.
Understanding P0304 in the 2024 Telluride
The 2024 Telluride features the refined 3.8L Lambda II V6 producing 291 horsepower through variable valve timing and direct fuel injection. This transverse-mounted V6 positions cylinder 4 on the rear bank toward the firewall. Kia's advanced engine management identifies the specific misfiring cylinder with precision.
V6 Misfire Causes
The naturally aspirated V6 faces standard ignition wear patterns. Spark plug electrode erosion affects ignition quality. Ignition coils degrade from heat cycling. Direct injection contributes to carbon accumulation on intake valves. Fuel injector performance directly affects the smooth power delivery expected from this premium vehicle.
Diagnostic Approach
Retrieve all codes and analyze freeze frame data. Access the rear bank for cylinder 4 inspection—the transverse mounting positions this bank toward the firewall. Test ignition coil output and spark plug condition. Verify fuel injector operation. Consider the vehicle's usage patterns.
Repair Solutions
Install Kia-specified spark plugs for the 3.8L V6. Replace ignition coils testing outside specifications. Address fuel system concerns. Professional carbon cleaning benefits vehicles showing intake valve deposit symptoms.