The Dodge Hornet brings European-engineered performance to the compact crossover segment with its turbocharged powertrains. When your Hornet displays a P0304 code indicating a cylinder 4 misfire, understanding this sophisticated engine helps target accurate diagnosis.
Understanding P0304 in the Hornet
The Hornet is available with a 2.0L turbocharged four-cylinder or a 1.3L turbo plug-in hybrid. For the 2.0L GT model, cylinder 4 is at the rear of the inline-4 engine. The engine control module monitors combustion events through crankshaft position analysis.
Turbo Engine Considerations
The 2.0L turbo engine operates under high combustion pressures, stressing ignition components. Spark plugs wear faster in boosted applications. Direct injection technology 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 that could cause lean misfires. Verify no vacuum leaks exist in the intake system.
Resolution Process
Replace spark plugs with manufacturer specifications for turbocharged operation. Test ignition coil output. Address any boost leaks identified. If carbon buildup is suspected, intake valve inspection may be warranted.