【 Master Ba【【 Master Bang online 】 Answer winter car start difficulties! Master Bang online 】 Answer winter car start difficulties!ng online 】 Answer winter car start difficulties!

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【 Master Bang online 】 Answer winter car start difficulties!

The weather is getting colder recently

Temperature drop

Many fans have had trouble starting their cars

Have asked Master Bang

today.

Master Bang summarized the difficulty of starting

Share with you

Why is the vehicle difficult to start?

How to deal with it?

Winter startup difficulties generally have two aspects:

1, the start is weak, the starter can not drive the engine to rotate easily!

2, the engine runs normally but can not catch fire when starting!

First of all, note the following two points; Battery loss, in particular, is often the main reason.

★ Check the battery voltage: check the starting voltage, that is, when the starter is operating normally, the battery voltage is not less than 12 volts! If below 12 volts will start weak, no fire! Now the car is commonly used maintenance free battery, but also need to regularly look at the inside of the power display: under normal circumstances, green means normal power, white means that you need to charge and maintain, red means that the battery is out of power (some also say: green means qualified, black means loss of power, white means battery damage needs to be replaced). The life of the battery is generally about two years, and the storage capacity will drop dramatically as the temperature decreases! Battery power drop should be replaced in time.

★ The starter speed is low, the copper sleeve is worn and the rotor butter has impurities in the cold condensation, which hinders the operation of the starter, then it needs to be cleaned or replaced.

Specifically, the starting difficulties of gasoline cars and diesel cars are also different, and the next is to analyze the different problems of gasoline cars and diesel cars.

Gasoline car

# 1

Throttle valve body, idle valve due to the carbon lag caused by starting difficult, if the idle valve vehicle can gently step on the accelerator and start again can catch fire, but the oil collection will be turned off immediately, so it is best to do the check in time. In addition, when doing maintenance, be sure to change the air filter element frequently, if the air is dusty, then the air filter is best replaced once 5,000 kilometers

# 2

The spark plug gap is large, the ignition energy is weak, some owners in order to save money when the spark plug is not replaced after the maintenance cycle, it will lead to the spark plug ignition energy decline, serious cause a lack of fire, and at present many models of the engine for direct injection in the cylinder, so the requirements for the spark plug is higher, generally 30-40,000 km replacement

# 3

Fuel pressure: In order to ensure the normal start of the engine, the residual oil pressure of the fuel system after the engine flares out can not be less than 2.5 ~ 3.5kg/C square meters, otherwise the pressure is not enough to spray enough fuel to ensure the start of the nozzle. At this time, if you repeatedly hit the ignition switch, the fuel pressure will return to normal, and it will be much easier to start. But it is best to find a professional maintenance personnel to check the fuel system and troubleshoot.

Diesel vehicle

# 1

Diesel oil cold condensation wax, resulting in diesel pump can not pump, nozzle blockage does not spray oil! The low-temperature diesel oil of -10# and -20# should be replaced in time according to the temperature

# 2

Engine preheating system failure: the engine preheating plug fails or does not work, the engine cannot meet the normal working temperature, and the diesel injected into the combustion chamber is not atomized and cannot be compressed

# 3

Paraffin formation in diesel pipelines, diesel filters and oil-water separators are frozen and wax formation results in blockage.

In addition, we should also pay attention to the problem of lubricating oil, in winter to replace a variety of lubricating oil in time, including oil, transmission oil, steering power oil, etc., because the ordinary lubricating oil in the winter viscosity increases, the fluidity becomes worse, resulting in increased friction resistance when the parts move, the engine is difficult to cold start.

The oil with slightly smaller viscosity can be selected to reduce mechanical wear and protect the engine.

China is geographically vast, if you are in the very cold north, and other places of the car owners can not replace the same oil, in general, the temperature is not less than minus 30 ° C to choose 5W, the temperature is less than minus 30 ° C not less than minus 35 ° C you need to choose 0W products.

In addition to the above factors, whether the individual sensors are working properly and whether the signals they "perceive" are accurate are also prerequisites for starting the car.

Summary: The reason why the vehicle is not good to start in winter mainly lies in the engine oil circuit, circuit, and mechanical failure.

From the oil line, the main fault lies in the low pressure of gasoline and dirty fuel injection nozzle;

On the circuit, it is because the spark plug electrode gap is too large, the ignition coil ignition energy drops, and the cylinder line has short circuit or open circuit.

From the engine mechanical failure causes are more complex, the common are: whether the valve is not tightly closed, whether the valve is too much carbon and so on.

In addition, if the car can not start directly, do not start one after another, which will accelerate the power consumption, in the first ignition can not start, should be 30 seconds interval, start again; And pay attention to battery maintenance, generally every two years need to be replaced.

This time to share here is the end, if you feel useful can share with friends around, in addition to lubricants or other car maintenance problems can be published in the comment area, Master Bang will answer for everyone.