The 2022 Lincoln Nautilus delivers luxury midsize SUV refinement with choice of EcoBoost turbocharged engines. When your Nautilus displays a P0304 code indicating a cylinder 4 misfire, understanding your engine configuration helps target accurate diagnosis.
Understanding P0304 in the Nautilus
The 2022 Nautilus offers the 2.0L turbocharged four-cylinder or 2.7L turbocharged V6. For the four-cylinder, cylinder 4 is at the rear of the engine. For the V6, cylinder 4 is on the rear of the left bank. Both use individual coil-on-plug ignition.
EcoBoost Engine Considerations
Both EcoBoost engines operate under higher combustion pressures than naturally aspirated designs. This accelerates spark plug wear and demands quality ignition components. Direct injection technology can contribute to carbon buildup on intake valves.
Diagnostic Approach
Identify your engine and access cylinder 4 accordingly. Inspect spark plug condition. Check for boost leaks in the charge piping. Verify no vacuum leaks exist in the intake system.
Resolution Process
Replace spark plugs with Ford/Motorcraft specifications. Test ignition coil output. If carbon buildup is suspected, intake valve cleaning may be warranted.