What is the reason for the cold start of JAC Ruifeng diesel vehicle?

1、

fuel nozzle

Dirty. After the vehicle runs for a period of time, due to the chemical reaction during the entry and combustion of external dust, it is easy to stick some glue at the fuel nozzle, which will block the normal fuel injection quantity, affect the perception sensitivity of the fuel nozzle, and lead to poor gasoline atomization, thus delaying ignition and making it difficult to start the vehicle.

2、

storage battery

Lack of motivation. The most direct impact of winter on urban family cars is the battery. At low temperature, the power consumption of cars will be significantly higher than other seasons, and so will batteries.

Low temperature environment

However, if the battery capacity becomes low and it is used for a long time, the initial starting voltage will be very low. For example, dirty oil attached to the battery surface will make the voltage output unstable, leading to car body jitter. If you arrive in time when winter comes.

Monopoly shop

This situation can be effectively avoided by recharging the battery or replacing it with a new one in time.

3. The fuel quality is low. Generally speaking, the fuel oil has high viscosity in autumn and winter, and it is not easy to evaporate, which has certain influence on the heat energy during combustion. At the same time, in informal gas stations, the fuel quality can not be guaranteed, resulting in insufficient power. Therefore, it is recommended that car owners choose regular gas stations to refuel, and don't be greedy and add low-priced oil.

4、

throttle valve

carbon build-up

. When starting, the fuel is too thin, the oil supply is poor, and the fuel is wet.

Spark plug

Phenomenon, can't start normally, this is because of the carbon deposit on the fuel injection valve, after more accumulation, the carbon deposit on the fuel becomes.

saturation condition

The supersaturated state makes the fuel flow into the cylinder in liquid state, which leads to the depression in the upper part of the cylinder piston. When the piston runs up and down, the fuel splashes on the electrode of the spark plug, which makes it unable to work normally and start. The above situation means that the car needs thorough maintenance and disassembly.

admitting port

, throttle, cylinder carbon deposit.

5. The oil flow is blocked. This is more obvious in northern cities where the temperature is particularly low. In winter, the viscosity of engine oil will increase, and the flow of engine oil will become more and more difficult, thus increasing the resistance of the engine and making it difficult to start the car in winter. In this case, the emergency solution is to put the car in a warm environment and start it normally after a period of time. But if you want to solve it completely, you'd better go to a franchise store to do a professional winter maintenance and change the appropriate oil according to local conditions.

6、

exhaust pipe

Do n't move The freezing of the exhaust pipe mainly happens to those car owners who are close to home and work. Due to the low frequency of automobile use, the water vapor after engine combustion freezes in some parts of the exhaust pipe, which is not enough to melt ice after short-distance driving, and it freezes more after one night. Over time, it will have an impact on vehicle start-up and exhaust gas.