The 2022 Mitsubishi Eclipse Cross delivers compact crossover style with its 1.5L turbocharged engine. When your Eclipse Cross displays a P0304 code indicating a cylinder 4 misfire, understanding this turbocharged powertrain helps guide accurate diagnosis.
Understanding P0304 in the Eclipse Cross
The Eclipse Cross's 1.5L turbocharged four-cylinder provides responsive power delivery. Cylinder 4 is located at the rear of the inline-4 engine, nearest the firewall. The engine control module monitors combustion events through crankshaft position analysis.
Turbo Engine Considerations
The turbocharged environment creates higher combustion pressures than naturally aspirated engines. This accelerates spark plug wear and demands quality ignition components. Direct injection can contribute to carbon buildup on intake valves over time.
Diagnostic Approach
Access the cylinder 4 ignition coil at the engine's rear. 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 Mitsubishi specifications if worn. Test ignition coil output. If carbon buildup is suspected, intake valve cleaning may be warranted.