Forgetting the cover of m4 water tank in Great Wall leads to high temperature. What is the burning smell of the engine now?

The m4 water tank cover of the Great Wall has not been covered, resulting in high temperature. What is the burning smell of the engine now? There are several kinds of engine jitter, such as gear start jitter, cold start, insufficient three-way catalytic temperature, serious engine carbon deposition and so on. The most common reason for vehicle jitter is that the throttle valve is too dirty or the nozzle has too much carbon deposit, because the gasoline adsorbed on the carbon deposit after landing is sucked into the cylinder by the engine for combustion, and the combustible mixture of the engine is sometimes rare and thick, which leads to idling jitter after cold start. Solution: The company cleans the oil circuit, and checks whether the idle motor has carbon deposit, so it should be cleaned.