What are the reasons why it is difficult to start a car in a cold start The reasons why it is diffic

1. The battery is insufficient. Its performance is characterized by the starter starting to rotate but the speed is not enough, that is, it is weak, and then the starter only clicks and does not turn. Low temperature in winter and forgetting to turn off individual electrical equipment will cause the vehicle to be unable to start, especially in winter for long-term short-distance low-speed use, the battery voltage will be lower than the rated value, starting and unable to operate normally.

At low temperatures, the car's power consumption will be significantly greater than its own.

Common causes of engine starting difficulties:

1. The ignition difficulty caused by carbon deposition in the car is accompanied by slight shaking at idle, cleaning the throttle, cleaning the carbon deposition in the inlet tract, and cleaning the fuel injector can solve the problem.

2. The ignition energy of the spark plug is weak, and some car owners do not replace the spark plug after the maintenance cycle in order to save money, which will lead to a lack of fire when the ignition energy of the spark plug decreases seriously, and the engine of many models is mostly direct injection in the cylinder, so the requirements for the spark plug are higher.

3. The low pressure of the fuel circuit is insufficient, and the insufficient oil pressure of the low-pressure oil circuit directly leads to the secondary ignition of the engine, the specific reason is that the first ignition is not ignited by the low-pressure oil circuit in the establishment of oil pressure, and the second time can catch fire. Specific inspection components: fuel pressure regulator, gasoline pump, gasoline filter and internal piping.

4. The battery is losing power, and the fault phenomenon of the battery is more common, and the first reaction of the owner when the car is generally not hit is that the battery is out of power. The solution is also very simple, you only need to find a car or other battery to take power.

5. The exhaust pipe is blocked, and the situation of exhaust pipe blockage generally rarely occurs, unless it is a coincidence or someone is playing a prank, but this situation is also easier to investigate.

6. The mixture is too thick or too thin, and many car repair masters know a cheat. What happens when the car doesn't hit and the other parts are fine? The master will spray the chemical cleaning to the throttle to hit the car, and the car is easy to get on the car and try it again and again (it is not recommended that the owner operate it himself).

7. The engine timing is not right, the engine timing does not match the engine must not be able to get on the car, and many car engines are in the form of timing belts, and the timing belt itself has no disadvantages, but some models of engines can cause tooth jumping when replacing the generator belt, resulting in no car.

The main problem of the difficulty in starting the car is that the drivers do not maintain the car enough, and the maintenance of the car should be regular and quantitative.

Hello answer, I have seen your question and am sorting out the answer, please wait for a while Hello, I have seen your question and am sorting out the answer, please wait for a while Hello, the common causes of engine starting difficulties: 1. Ignition difficulties caused by automobile carbon deposition 2, weak ignition energy of spark plugs 3, insufficient low pressure of fuel circuit 4, battery power loss 5, exhaust pipe blockage 6, mixture too thick or too thin 7, engine timing is wrong.

7. The engine timing is not right, the engine timing does not match the engine must not be able to get on the car, and many car engines are in the form of timing belts, and the timing belt itself has no disadvantages, but some models of engines can cause tooth jumping when replacing the generator belt, resulting in no car.

The reasons for the difficulty of cold start in automobiles are: low engine temperature, excessive carbon deposits in the engine, aging spark plugs, and improper operation of the water temperature sensor.

The temperature of the car engine is too low, indicating that the temperature inside the engine is not enough, the internal oil and lubricating oil have not reached the optimal lubrication state, and the ignition ability of the engine is reduced at low temperatures, which leads to difficulty in starting the engine.

If the car is not cleaned up in time for a long time, the engine is more likely to produce carbon deposits, and the carbon deposits produced are easy to block the exhaust pipe, and at the same time, it will also absorb fuel, resulting in reduced engine work efficiency, assuming that the fuel injection volume of the driving computer is 100%, but the actual working fuel is only 90%, which means that the remaining 10% of the carbon deposits generated are absorbed, so the engine will have difficulty starting, in order for our car engine to work better, it is recommended to pay more attention to maintenance, Clean up engine carbon deposits regularly.

The spark plug is easy to age after a long period of use, resulting in a deviation in the ignition clearance of the spark plug, and the replacement cycle of the spark plug is about 2-30,000 kilometers, so it is recommended to replace the spark plug regularly.

The failure of the water temperature sensor is also one of the reasons for the difficulty of cold start of the car, the sensor fails, the driving computer will make a mistake in judgment, and the fuel injection of the engine will become smaller, which will lead to insufficient engine power and the engine can not reach the best operating state.

1. Most of the difficulties in starting the car in winter are caused by the loss of battery power or the expiration of the battery service life. When the battery is low, the speed is weak when starting the car, and only the clicking sound is heard, and the clicking sound will gradually become a clicking sound when the ignition is lit again. Do not ignite continuously to avoid the battery running out.

Do not park the vehicle for a long time in winter, generally park the vehicle for a week to drive out for a circle, so that the battery power can be effectively replenished.

2. In winter, as the temperature decreases, the viscosity of the engine oil will increase, and the oil flow will be difficult, so that the engine resistance will increase. If it is difficult to start, check whether the oil label is incorrect.

3. After a few years of use, the spark plug is easy to cause problems such as carbon deposition, leakage, excessive gap, and ablation, which will cause difficulties in the ignition of the car, and it is very difficult to start the cold start or even the hot engine, and it is often necessary to ignite many times.

What is the reason for the difficulty in starting the car in winter? Both new and experienced drivers need to know.

Check if the water temperature sensor is faulty, the flow meter is faulty, etc.

Generally, it is a little more difficult to start a car with a cold engine than a hot engine, because the engine needs more energy when the cold engine is started, and the state of the car also needs an adjustment process, so the cold engine is slightly more difficult than the hot engine. Nowadays, many people think that the difficulty in starting the cold engine of the car is due to too much carbon deposit or ignition system failure. However, in life, there are a lot of factors that make it difficult for a car to start.

First of all, if there is a large amount of carbon deposits in the engine compartment, or if the ignition system fails, it will naturally make it difficult to start the car, because the car needs the right amount of fuel, gas mixture, and electrical energy to start. When carbon deposits accumulate in the valve and air intake positions, it is easy to reduce the amount of air entering the engine, and as a result, the engine control unit can make incorrect judgments, resulting in a decrease in fuel injection. At this point, it will be difficult for the car to start.

In addition, faulty water temperature sensors, unstable oil pressure, and fuel quality issues can make it difficult to start.

Many people may wonder why the water temperature sensor affects the start of the car. In fact, not only does the air intake system affect the amount of fuel injected into the engine control unit, but the water temperature sensor also affects the amount of fuel injected in the engine control unit. As we all know, the lower the temperature, the more energy the car needs to start, that is, 0 degrees is more energetic than 20 degrees.

However, if the water temperature sensor fails, it is obviously 0 degrees on the outside, but the signal returned by the sensor to the engine control unit is 20 degrees, which may cause insufficient fuel injection to start the engine, so the failure of the water temperature sensor will make it difficult for the car to start cold.

Secondly, it is well known that the right amount of fuel is required to start a car. If the oil pressure in the car is unstable or insufficient when it starts, the engine will not start because there is not enough fuel, which usually happens in classic cars. In addition, anomalies in the fuel system also involve intake pressure sensors.

If the intake pressure sensor is not working well, it will generally lead to serious idle shake of the car. In severe cases, the car will have a hard time starting. In this case, we have to hand over the car to a professional and let them fix it for us.

Finally, fuel quality actually affects the working condition of only a few vehicle engines. Rare luxury cars generally have high requirements for fuel quality, not to mention the difference between No. 95 and No. 92. After all, the engine structure of this kind of car is more complex, and when the oil is not up to standard, it will cause the combustion to fail to reach the corresponding calorific value, resulting in a small combustion power output.

At this time, it is not only difficult to start the car, but also may injure the car itself, so the engine oil is also worth paying attention to.

In fact, if we could count our cars as carefully as we would friends, there would be no big problem. As long as the daily maintenance work is done enough, I believe that your car will not be difficult for you.

Millions of car purchase subsidies.

What are the reasons for the difficulty of cold start of the carThe reasons for the difficulty of cold start of the car are: low engine temperature, excessive carbon deposit in the engine, aging of spark plugs, abnormal operation of water temperature sensors, etc. The low temperature of the automobile engine indicates that the internal temperature of the engine is not enough, the internal oil and lubricating oil are not in the optimal lubrication state, and the ignition ability of the engine at low temperature is reduced, resulting in difficulty in engine starting.

If the car is not cleaned in time after long-term use, the engine is easy to produce carbon deposits, easy to block the exhaust pipe, and at the same time absorb fuel, reducing the efficiency of the engine. Assuming that the fuel injection of the trip computer is 100%, and the actual operating fuel is only 90%, which means that the remaining 10% of the carbon deposit is absorbed, then the engine will be difficult to start. In order for our car engine to work better, it is recommended to pay more attention to maintenance.

Spark plugs are easy to age after long-term use, resulting in spark plug ignition clearance deviation. The replacement cycle of the spark plug is about 2-30,000 km. It is advisable to replace the spark plugs regularly.

A faulty water temperature sensor is also one of the reasons for the difficulty of starting a cold car. If the sensor fails, the trip computer will make a mistake in judgment, and the engine fuel injection will become smaller, resulting in insufficient engine power and the engine will not reach the optimal operating state.