The car has difficulty starting 50, and the car has difficulty starting

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.

1. The starter does not rotate or rotates slowly.

Check the battery voltage.

Check whether the battery pole and wire connection are loose.

Check the starting system, including the ignition switch, the start switch, the neutral start switch and the starter, and whether the wiring is loose.

2. The starter rotates normally, but the engine cannot start.

The fault code is called.

Check the fuel pump is working.

Check that the idle system is working properly (if the idle system is not working properly, the engine can start when the accelerator pedal is pressed).

Check the ignition system, including high-pressure sparks, ignition timing conditions, spark plugs, etc.

Check the air intake system for air leaks.

Check if the air flow meter or air pressure sensor is not working well.

Check whether the injector and low-temperature start injector are working properly.

Check the EFI system circuitry, including the ECU connector terminals.

Check the mechanical part for malfunction.

Judging from your description, it is difficult to judge, and there are many possibilities that it will be difficult to fire a car for five years. I suspect that the battery can indeed be checked, because the battery of this car is not durable (the Focus and Mondeo I had before were not able to ignite the fire and change the battery for three years). The easiest way to do this is to take the car to the repair shop and park it overnight, and the next morning take the electric light to see if the situation is the same.

A cold start is when the engine is started with low water temperature, usually after the car has not been started for a long time (such as after parking at night). High viscosity oil is used in winter.

The various manifestations and reasons for the difficulty in starting the automobile engine are very well explained by the experienced old drivers.

As a means of transportation for daily travel, the car increases with the number of years of use. It is inevitable that there will be all kinds of failures, among which the most headache for the majority of car owners is the difficulty of starting the car, what is the reason for the difficulty of starting the car? 1. Excessive carbon deposition in the car engine:

When the engine oil is burned, it will inevitably leave some carbon deposits that will grow over time, and if it is not treated in time, it will become more and more, which will eventually lead to insufficient engine combustion oil and difficult to start. 2. Spark plug problem: spark plug is an important factor that directly affects the start of the car, once it has leakage, too large gap, etc., it will lead to the difficulty of car starting, and it often takes many times to ignite successfully.

3. The temperature is too low: engine oil is a liquid, as the temperature decreases, the viscosity of the engine oil will increase, which will make it more difficult in the process of flowing, so that the engine will be subjected to greater resistance, resulting in the car needs to be started many times before it can start. 4. There is a problem with the battery:

The battery has a loss of power, or a short circuit in the line, which will lead to the problem of insufficient engine power or weak ignition, resulting in difficulty in starting the car.

There are many reasons why the car is difficult to start, the most common problem may be that the battery has no power, if the battery is out of power, the car is not easy to start, and there is to see if the starter is good? If there is a problem with the starter, then the car is not easy to start, and these two problems are generally more common.

1. Carbon deposits.

At high temperatures, carbon deposition has a strong adsorption effect on gasoline, if there is more carbon deposition on the intake valve, throttle, piston, etc., it is easy to adsorb some fuel, resulting in the mixture being too thin, thus affecting the start.

2. Water temperature sensor.

The water temperature sensor has the effect of correcting the pulse width of the fuel injection, if it works poorly and cannot provide the correct temperature signal, it will affect the engine injection, and it is easy to cause the mixture air-fuel ratio to be abnormal, affecting the start.

3. Inlet air temperature sensor.

The higher the temperature of the inlet air temperature sensor, the more concentrated the mixed steam, or the broken circuit of the inlet air temperature sensor or the poor tie will cause the mixed steam to be too thin, but too thick or too thin is easy to cause difficulty in starting.

4. Fuel quality problems.

The temperature of the engine compartment is still very high after the hot car is turned off, and if the fuel quality itself is easy to volatilize, it is easy to form a higher evaporation pressure in the fuel rail, and when this pressure is greater than the pressure of the fuel supply system, it will form air resistance, causing the oil vapor sprayed by the fuel injector to be too thin, resulting in difficulty in starting.

5. Fuel injector dripping.

Fuel injector dripping, because the engine has just turned off and the temperature is still very high, the leaking fuel will turn into oil vapor into the intake pipe, at this time, the hot start will cause the mixture to be too thick, so that it is difficult to start.

6. The solenoid valve of the carbon canister is damaged or closed loosely.

The solenoid valve of the carbon canister is the function of controlling the oil and gas in the carbon canister, after the engine is turned off, the gasoline vapor and fresh air are mixed in the tank and stored in the activated carbon canister, when the engine starts, the electromagnetic valve between the activated carbon canister and the intake manifold is opened, and the gasoline vapor in the activated carbon canister is brought into the cylinder by clean air to participate in combustion under the vacuum degree of the intake pipe. If the canister solenoid valve is damaged or not closed tightly, then the mixture in the intake tract of the engine will always be in a thickened state, because the engine control computer has not yet controlled the canister solenoid valve to work, and will not issue a command to reduce the amount of fuel injected. The fuel atomization of the hot car itself is very good, and there is no need to replenish oil and gas, and the carbon canister has been replenishing oil and gas to the inlet tract, which will definitely cause the mixture to be too thick, which will lead to difficulty in starting.

1. Check the status of the battery.

In most cases, the difficulty of starting the car in winter is caused by the loss of battery power or the expiration of the battery 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.

2. Change the appropriate engine oil.

In winter, as the temperature drops, the viscosity of the oil increases, making it difficult for the oil to flow, which increases the resistance of the engine. If it is difficult to start, check whether the oil label is incorrect.

3. Replace the spark plug in time.

After a few years of use, spark plugs are prone to cause problems such as carbon deposition, leakage, excessive clearance, and ablation, which will cause difficulties in car ignition, cold start, and even hot engine start, and often need to be ignited multiple times. Therefore, when driving to a certain number of kilometers or feeling that the vehicle is difficult to start, weak, shaking, increasing fuel consumption, or inexplicably stalling, please check the spark plug status and replace it in time.

The reasons for the difficulty of ignition of automobiles are: battery failure, spark plug blockage, gasoline pump pressure relief, etc.

1. Battery failure

First ignited, the car engine will make a "da-da-da" sound, and it will catch fire as soon as it hits. If you hear the sound of "da-da-da", the car still does not ignite, and the battery indicator on the lead-resistant dial of the car instrument also lights up. At this time, the battery is out of power.

Workaround:The vehicle in front uses a towrope to pull the car behind to walk.

2. The spark plug is blocked

If the vehicle starts successfully, but there is obvious frustration when starting, then we should observe the operation of the engine, and there is continuous or intermittent shaking, it is likely to be caused by the spark plug.

Workaround:You can start with the spark plug to see if there is a hidden danger in the withering, so that it can be replaced in time.

3. Gasoline pump pressure relief

Many car owners will encounter the situation that the first ignition fails, and the second time it will succeed. This situation should not be taken for granted as the cause of the battery's power loss, in fact, it is mostly related to the pressure relief of the gasoline pump. After a long period of use, the gasoline pump will wear out internally, which will lead to insufficient fuel supply pressure and difficult ignition.

Workaround:In this case, replacing the gasoline pump can solve the problem.

Unable to start or difficult to start.

The phenomenon of not being able to start the sail may be to turn on the ignition switch engine without any starting signs, the starter has a sound but can not rotate, the starter can rotate but can not move the dynamic Sun Liang machine, or the engine can be driven by the starter but can not start. Difficulty in starting may be the slow rotation of the engine, or the uneven sound when the engine rotates. Starting difficulties may occur in freezing weather or very hot weather, or at room temperature, or it may be difficult to start a cold car for the first time, and it may start normally when the car is hot.

These phenomena are related to the poor operation of the main injector, cold start injector, temperature control switch, ECU and control circuit, battery power loss, ignition or pulse generator damage, fuel system does not supply oil or abnormal oil supply and other factors. For automatic transmission cars, failure to start may be due to the wrong position of the transmission handle.

In the process of daily car use, I believe that many car owners have tried to disturb the corner when the vehicle is difficult to start. Some car owners damage their cars because of improper handling, and some even have traffic accidents because it is difficult to restart after turning off the engine during driving! What would you do in the face of this difficult entrepreneurial situation?

Difficulty starting symptom 1: Severe lack of battery power. Since the service life of the battery is about 4 years, the storage capacity and external power supply capacity of the battery are greatly reduced when it is close to the end of life, especially the terminal section is prone to vulcanization and corrosion of the battery.

Prescription: Recharge or replace depending on the situation. If the color observed from the battery's eyeholes is green, the battery is in a normal state; If the gray indicates that the battery needs to be replaced when it is scrapped, and the effect is still not satisfactory after timely repair, it is recommended to replace it; If it is black, it means that the battery is low and needs to be charged, but it is recommended that the charging current is not too large, and you can use a trickle to make the battery more full.

Difficulty 2: Initiator problem. Severe wear and tear on the starter's relays or brushes can make it difficult for the car to start, especially if the starter is damaged.

The right medicine: you can choose to change the brush, change the relay, and change the starter. After replacing the parts, you can try to start the vehicle and see if the starter has a sound and if it is working properly.

Difficulty 3: The engine has a lot of carbon deposits. Throttle valves, air intakes, and fuel injectors are all prone to carbon deposits, so the combustion of combustible mixtures in vehicles with excessive carbon deposits is insufficient, which is easy to lead to insufficient power, which is directly manifested as difficulty in starting.

Prescribe the right medicine: check and clean the throttle, air intake, grease nozzle and other components. Chemical cleaners can be used for spray cleaning.

For 4S shops, the common method is walnut sand cleaning, carbon deposit or dry ice cleaning. Of course, the latter is more expensive, but the cleaning effect is very good. Gasoline additives can also be added to the fuel tank to clean up carbon deposits through the fuel-combustion cycle.

Start-up difficulty certificate 4: Failure of the canister. A malfunction of a carbon canister can make it difficult for a car to start in hot weather.

It acts as a gasoline vapor, which then sends the gasoline back to the intake manifold to participate in combustion. If the canister fails, it can also cause an imbalance in the mixing ratio, which can make it difficult to start the car.

The right medicine: the canister cannot be repaired, and it can be replaced. Generally, the carbon canister** is not very expensive, if it cannot be started because of the carbon canister problem, the test can be replaced.

The difficulty of starting is generally that the spark plug needs to be replaced, the spark plug has a long time, the gap is large, and the car battery voltage is not enough, you can check both to see.

Analysis of possible causes: 1. Insufficient gasoline; 2. The gear is wrong; 3. The battery is insufficient; 4. Use inferior antifreeze; 5. Engine internal factors.