Відомий дефект: Wikipedia notes the 2.4L Theta II GDI family had later variant outputs, but the provided sources do not identify a specific recurring G4KJ defect beyond general engine listings. No verified issue can be stated from the supplied sources.
Відомий дефект (ГРМ): No verified timing-belt issue is indicated for the G4KJ; it is a chain-driven engine. Verified sources provided here do not specify a common G4KJ timing-chain defect.