Jeep Wrangler check engine light with cylinder #4 misfire and rough idle, possibly requiring valve and lifter replacement on Jeep Wrangler

Some Jeep Wrangler owners report experiencing a cylinder #4 misfire, which can manifest as rough running, power loss, stalling, excess vibration, decreased fuel mileage, and a smell of raw gas. These symptoms may indicate various underlying issues, such as a clogged fuel injector, faulty spark plug, ignition coil problems, vacuum leaks, or exhaust gas recirculation issues. Additionally, some owners find it necessary to inspect the valves and lifters for leakage or damage when facing a misfire in cylinder #4. A flashing check engine light, particularly in the context of a misfire, signals a severe issue that could lead to engine and catalytic converter damage, highlighting the importance of prompt attention to prevent further harm. It is recommended that affected owners consult a qualified mechanic or dealership for accurate diagnosis and necessary repairs.