What should I do if Dongfeng Xiaokang accelerates slowly and loudly?

For the question you asked, the lack of acceleration may be due to excessive carbon deposition in throttle, idle motor, air intake, air intake valve, combustion chamber and fuel nozzle, which leads to insufficient acceleration. Because these carbon deposits will block the idle passage, the idle motor will be stuck or beyond its adjustment range, resulting in the phenomenon of low idle speed, unstable idle speed and weak acceleration of the engine. As for the problem of loud engine noise, loud engine noise should have a lot to do with the lubricating oil used. Mainly check the use of engine oil. I suggest you try changing the oil with high viscosity first. In addition, if inferior gasoline is added, it may lead to the decrease of engine power, the increase of carbon deposition inside the engine, and the increase of engine noise; What's more, if the engine vibrates, it will also cause engine noise. Your car is still a new one. I suggest you try changing the oil. I hope my answer is helpful to you.