The revived 2022 Acura Integra delivers sporty compact performance with its efficient 1.5L turbocharged engine. When your Integra displays a P0304 code indicating a cylinder 4 misfire, understanding this modern powertrain helps guide accurate diagnosis.
Understanding P0304 in the Integra
The Integra's 1.5L turbocharged four-cylinder is derived from Honda's proven VTEC Turbo technology. Cylinder 4 is located at the rear of the inline-4 engine, nearest the firewall. The engine control module monitors combustion events with precision.
First-Year Model Considerations
As a 2022 first-year return model, some early Integras may have benefited from technical service bulletins. The 1.5L turbo engine is proven across Honda/Acura applications but may have Integra-specific calibrations to consider.
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 Acura specifications if worn. Test ignition coil output. If carbon buildup is suspected, intake valve inspection may be warranted. Verify warranty coverage for applicable repairs.