The car hit a few times and couldn t catch fire, what was the reason

Hello, you need to judge what kind of reason is the reason for not ignition.

The first type: out of gas.

If your car has very little oil, or the fuel gauge shows that it has been below the red line, it will naturally not ignite, when you find that the car is not on fire, you should look at the fuel gauge as soon as possible, to see if there is still oil, and do not wait until the fuel tank bottoms out to refuel, which will not only affect the life of the engine, but also affect the life of the oil pump, and even the oil pump will work without oil, which will be dangerous.

The second: crankshaft.

Position sensor failure.

The crankshaft position sensor is the most important sensor in the EFI engine, especially in the centralized control system, and it is also the sensor shared by the ignition system and the fuel injection system. The function of the crankshaft position sensor is to monitor the position of the crankshaft, so that the engine computer can sense the speed signal, if the crankshaft position sensor fails, the computer will not be able to detect the speed signal, and it will not be able to tell whether you are ignition, and it will not be ignited. The third type:

If the starter car encounters these problems, it is recommended that you check whether the starter is faulty: first, the ignition switch is obviously pressed, and the starter is also rotating at high speed, but the engine just does not respond. This problem is actually very simple, it can be basically determined that the problem lies in the starter, didn't it be said above, the DC engine outputs kinetic energy, and the kinetic energy is transmitted to the engine by the transmission mechanism through the driving gear, so the problem must be in this transmission process.

It is usually caused by the wear of the drive gears. The second is to press the ignition switch, but even the starter does not move. This is usually a problem with the wiring, the battery-powered power cord may be burned out, or the starting relay may be broken.

Fourth: the battery is out of power.

The car is parked due to a long period of time、Car battery。

The service life is up, the generator is damaged, the electrolyte.

Insufficient or leaking, fuse.

Burnout, corrosion of car battery pile heads, and overuse of batteries can all lead to a dead car battery. In addition, the installation of xenon headlights, high-power audio, etc. are also the causes of vehicle circuit failures. The situation of the vehicle without power is easy to check, just press the horn to know.

Fifth: carbon deposits.

Plethora. Too much carbon deposition will cause the ignition of the spark plug of the car to be poor, the valve is not tight, and the fuel injection nozzle is not good, resulting in the lack of fire in the car, the acceleration is weak, the machine is shaking, and it will not catch fire in serious cases. Throttle.

If there is too much carbon deposit, it will cause the air to circulate, and there will be no air coming in and it will not be able to catch fire. In the case of too much carbon accumulation on the throttle valve and it can't catch fire, you can try a little oil, and maybe you can ignite it smoothly.

1.The battery voltage is insufficient, resulting in insufficient ignition energy to start the car.

2.There is a dripping phenomenon in the injector, which causes the mixer in the cylinder to be too thick and cannot be put on the car.

3.The cylinder pressure is too low to make it impossible to land.

4.The injection pressure of the injector is too low, which causes the gasoline to not be atomized well, making the gasoline in a liquid form and unable to land the car.

Is there a clicking sound when starting If there is no sound, it is likely that the battery or throttle is malfunctioning. If there is a clattering sound but cannot be started, you need to check whether the fuel injection of the lower fuel injector is normal and whether the ignition of the spark plug is normal.

What is the reason why the car does not catch fire?

A common point of failure with difficulty starting, the car is parked for a long time, and the service life of the car battery is the main cause of power loss. Usually the lifespan of a car battery is two to three years. If this life is exceeded, once the car stops for two or three days, it is very prone to power loss, resulting in weak starting.

Forget to turn off the lights and car appliances, and forget to turn off the lights in the car when the car is parked and turned off. After the battery drains overnight, it may run out of power, resulting in weak starting.

If the car doesn't catch fire, it always has to be played several times because the oil pressure drops. If the oil pressure of our gas oil pump is not enough, or the pressure is released after the ignition, when we ignition, because the oil pressure is not enough, the injector can not inject fuel normally, so we can't hit the engine, we need to hit it several times, so that the fuel pressure can reach the normal level before we can get on the car; Fuel nozzles are clogged, resulting in poor fuel atomization or incorrect injection pulse width, which can also lead to poor driving; The aging of the spark plug and the serious carbon deposition lead to weak ignition ability and ignition failure. The same type of spark plug needs to be replaced in time, and the air valve leakage leads to an incorrect air-fuel ratio, or an incorrect air-fuel mixing ratio leads to a failure to ignite normally.

In order to save money, some car owners do not replace the spark plug after the maintenance period, which will lead to a serious decrease in the ignition energy of the spark plug, resulting in a lack of fire. At present, the engines of many models are mostly direct injection in the cylinder, so the requirements for spark plugs are relatively high. Carbon deposits in the car make ignition difficult, accompanied by slight shaking when idling.

Cleaning the throttle, intake carbon deposits, and injectors can solve the problem. It is also possible that the fuel injection atomization is poor due to low fuel pressure, making it difficult to start. It is recommended to give it a try.

Open the key door and don't hear the sound of the oil pump until the meter light is fully turned on. After the sound is over, close the key door and repeat the above operation, after restarting, it should be able to start again.

This happens after 20,000 kilometers, and if this happens after the car has traveled 20,000 kilometers, it may be that the fuel filter is faulty. The role of a gasoline filter is to filter out solid impurities such as iron oxide, dust, or water contained in gasoline. On the one hand, it can reduce the probability of the injector being clogged by impurities, and on the other hand, it can ensure the quality of the gasoline flowing into the fuel system.

Possible reasons for ignition difficulties are:

1. 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 serious decrease in the ignition energy of the spark plug, resulting in a lack of fire, and the engine of many models is mostly direct injection in the cylinder, so the requirements for the spark plug are higher.

2. 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.

3. It is also possible that the fuel pressure is low and the fuel injection atomization is poor, and it is not easy to start, it is recommended to try it, open the key door to the instrument light full bright, hear the sound of the oil pump, wait until the sound is over, close the key door, and then repeat the above operation, and then start it should be able to play at one time.

It's likely that there is a problem with your car's spark plug, or the fuel feeder is clogged, so you have to play it several times before you can turn it on.

First of all, it may be because there is no oil, secondly, it may also be due to electricity, or there are some problems with the spark plug high-pressure pack, and finally there may be such a problem due to engine failure.

It may be because your car is out of fuel or there is a problem with the spark plug, or the fuel pipeline is blocked, or the battery is problematic, so it can't start.

Generally, this is because the fuel injector of the car has carbon deposits, so it will be difficult to start or even impossible to start.

If the car does not catch fire, it may be that the flow of gasoline is blocked. In addition, there is a small trick for not ignition, before starting the ignition, first screw the key to the ON switch, and then turn it back, and then turn on the strat switch to ignition, let the computer run to calculate the water temperature and the appropriate air intake, and the ignition will be smoother.

In addition to the reasons for improper human operation, improper oil products, no antifreeze, and excessive carbon deposits, there may also be motor failures, or oil pump oil supply, fuel injector problems, sensor failures, etc., which need to be dealt with by professionals. However, pay more attention to the following items when using a car to avoid these complex situations.

The car suddenly does not catch fire, it may be that the battery is not good, the battery is generally used for about four years, and if it is maintained and used well, it is also useful for six or seven years. In addition to the reasons for improper human operation, there may also be motor failure, oil pump supply, fuel injector problem, sensor failure, etc., which need to be dealt with by professionals.

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.

1. Take the wire: This is a necessary item for the car to take the electricity, do not take two wires to make do, because the instantaneous current of the vehicle at the start can reach 200-600A, and the diesel car even reaches 1000A, if it is calculated, 10 square copper wires can ensure the smooth and safe start, so the car battery connection line must buy the right brand, the quality is the best, do not try to be cheap. This is one of the must-have items in the car, once the battery is out of power, you can take it out and use it, and you can also help others when you don't use it.

2. Emergency power supply: This is a new type of power bank like a thing, there are two kinds of lead-acid and polymer lithium battery, which can help the vehicle with a loss of power to start, and can also have lighting, charging mobile phones and multi-functional supplies used with an inflatable pump to inflate the car. And it is generally portable, very lightweight, if you have it, you don't have to ask others for help.

Be sure to charge it in time after use and keep it full of power to deal with emergencies.

3. Positive, first connect the positive: first turn off all the electrical equipment on the car, make the key in the OFF position, open the cabin cover to find the battery, there are positive and negative poles written on the battery, generally the red "+" sign is the positive pole, and there are generally two wires, at this time, take out the red one, open the battery cover, pinch the clamp on the head to clamp firmly the positive pole of the battery of the electric car, and the clamp at the other end to clamp the positive pole of the battery of the rescue vehicle. Be sure to connect the positive electrode first, then the negative electrode, do not reverse the order, and do not use the battery clamp to touch anywhere except the battery pile head.

4. Negative connection, negative connection: After the red positive electrode is connected, take out another wire, first clamp the negative pole of the tram battery, the negative electrode is generally black "—" number, and then pinch the other end of the clip, from beginning to end the clip do not touch other places, to clamp the negative pole of the rescue vehicle battery, when the connection will pop out of the electric spark, please don't be afraid, this also shows that you are right. The reason why the negative electrode is not connected first is because the whole vehicle is basically a negative electrode (that is, commonly known as "tie iron"), if the negative electrode is connected first, when connecting the positive electrode, the clip will cause a short circuit and burn the parts on the car when it touches any conductive place in the body.

5. After starting the vehicle, first remove the negative, and then dismantle the positive: after the battery is connected, the rescue vehicle will first ignite and charge the battery, and then the no tram enters the vehicle to open the key, at this time the instrument light will be lit smoothly, and then try to ignite (not more than 5 seconds), if it fails to start smoothly, step on the accelerator of the rescue vehicle, and the speed is kept at about 2500 rpm, and then the tram is ignited again, if the starter is no problem, the car has oil in the case of general can be started smoothly, after the non-electric vehicle starts, Remove the negative clamp first, then remove the positive clamp, for the same reason as why the negative pole is followed by the fourth one.

The positive and negative poles of the battery must not be reversed, and the order of assembly and disassembly should be strictly in accordance with the order of first connecting the positive and then the negative, and the first dismantling and then the positive.

Turn on the key and wait for the computer to finish the self-test before ignition, because the gasoline pump starts to pump oil to the nozzle during the self-test! The engine oil should be changed, and the spark plug should be checked once every 10,000 kilometers. It is recommended to replace the spark plug, and the original spark plug is 16 pieces!!

It is very likely that the battery is fed, and you can call the rescue** to flush down your battery.

This situation may be caused by poor contact of the ignition coil or ignition high-voltage wire, or it may be caused by a delay in the computer signal.

Cars sometimes don't catch fire.

The reasons are du: zhi

1.The car battery is used for too long

You can rule out electricity in this case.

Return the bottle. 2.Poor contact of the lighter line. Have a professional inspect the repair.

3.Whether the starter motor is in good working condition.

4.Whether the vehicle line is in good condition is confirmed and repaired as a key point.