Hey everyone, I finally got my new Hankai 6.5 4-liter, I was curious about what it was. The engine was running rough due to the cheap, bad spark plug installed at the factory. In the video, I'll show you a preliminary engine diagnostic before starting it, the spark plug I'll install, and other little things to pay attention to when buying. The crankcase in the engine, by the way, is 0.5 liters (I didn't mention it in the video). If you have any questions, welcome to the channel in the comments. I'm happy to answer everyone.