Chery Fengyun changed the throttle oxygen sensor, but the pressure sensor still emits black smoke. What's the problem?

This is typical. The engine cylinder pressure is too low, and the mixed pressure of engine oil and oil and gas is low, which leads to the overheating of gasoline. Have you checked the engine cylinder pressure? One or more of your cylinders are scraped wide. First, you need to confirm whether this is the problem, and then find a shop that can bore piston cylinders to help you solve it. This is a big project, brother. Get ready.