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Timecodes: 0:38 - 01:04 Naturally aspirated 2.4 GDI engine What is its structure and what cars is it used in? 01:17 - 02:14 What technological solutions allowed to reduce the overall weight of the G4kj engine and is it good? 02:44 - 03:00 Plastic valve cover on the G4kj engine and why does it flood the spark plugs? 03:01 - 03:17 Intake manifold What affects the change in its filling in the G4kj engine? 03:18 - 03:48 Cylinder head structure in the G4kj engine What improves cylinder filling and why do valves get dirty? 03:49 - 04:09 Why is MPI better than GDI? Why do injectors get dirty in the G4kj engine? 04:10 - 04:25 How is the fuel supply system arranged in the G4kj engine? Why do injectors get dirty? 04:27- 05:24 What causes scoring on the Kia Optima 2.4? What is an electric actuator? 05:26 - 05:48 Timing belt device on the G4kj engine How often should it be changed? 05:49 - 06:26 Oil pump device on the G4kj engine, why is simplicity not always good? 06:29 - 07:33 Connecting rod and piston group on the G4kj engine? Why are oil injectors so important on this engine? What is the advantage of lightweight pistons? 07:33 - 08:10 What causes interruptions in the operation of the G4kj engine at idle? 08:11 - 08:39 Advice on operating the G4kj engine What should be done every 20 and 80 thousand km? What oil to fill? 09:02 - 09:34 How to solve the problem with optical headlights on Kia Optima? 09:57 - 11:27 How to make the rain sensor work on Kia Optima? Working life hack