In general, the first thing to think of when the engine vibrates is to clean the throttle and fuel injection nozzle. So what is the engine shaking when the car starts? In fact, these problems can be solved.
The most common cause of vehicle jitter is that the throttle valve is too dirty or the fuel injection nozzle has too much carbon deposit. When there is too much carbon deposition in the engine, the gasoline ejected from the cold start fuel injection head will be absorbed by the carbon deposit, which will cause the mixture of cold start to be too thin, making it difficult to start. In this case, it is only when the gasoline absorbed by carbon deposition is saturated that it is easy to get on the car. After landing, the gasoline adsorbed on the carbon deposit will be sucked into the cylinder by the engine's vacuum suction for combustion, and the mixture will become rich The fuel mixture of the engine is lean and sometimes rich, resulting in idle jitter after cold start. The lower the temperature is, the more oil is needed for cold start, and the existence of carbon deposition will affect the success of cold start.
It is inevitable for the engine to produce carbon deposit, but when the carbon deposit is too much in the engine, the engine will not work well and produce different faults. When there is too much carbon deposit inside the engine, the gasoline ejected from the cold start fuel injection head will be absorbed by the carbon deposit, resulting in the mixture of cold start is too thin, which makes it difficult to start. Until the gasoline absorbed by the carbon deposit is saturated, it is easy to get on the car. After landing, the gasoline adsorbed on the carbon deposit will be sucked into the cylinder by the vacuum suction of the engine for combustion, so that the mixture becomes rich and the engine is combustible When the gas is thin and sometimes rich, it causes idle vibration after cold start.