The 2022 Acura TLX delivers sport sedan performance with choice of turbocharged engines. When your TLX displays a P0304 code indicating a cylinder 4 misfire, understanding your engine configuration helps target accurate diagnosis.
Understanding P0304 in the TLX
The 2022 TLX offers the 2.0L turbocharged four-cylinder or Type S's 3.0L turbocharged V6. For the four-cylinder, cylinder 4 is at the rear of the engine. For the Type S V6, cylinder 4 is on the rear of the left bank. Both use individual coil-on-plug ignition.
Turbo Engine Considerations
Both TLX engines are turbocharged, creating higher combustion pressures than naturally aspirated designs. This demands quality ignition components and can accelerate spark plug wear. Direct injection technology may contribute to carbon buildup over time.
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 Acura specifications for turbo operation. Test ignition coil output. If carbon buildup is suspected, intake valve inspection may be warranted. If within warranty, dealer diagnosis ensures proper repair.