How to troubleshoot if the ignition system of the car ignition system is not ignited

Hello car owner, check the insurance, crankshaft position sensor.

Hello, I am happy to answer for you, 1. If the circuit or electronic fault is simply because the circuit fault cannot ignite, this situation must be sudden and occur without any warning. If the circuit fails, there is a problem with the line. Electronic failure refers to a problem with the control computer board.

No matter which of the above two situations occurs, it may cause the car to fail to ignite when there is electricity. 2. Oil circuit failureThe oil circuit is the main power of the car to drive, once there is a problem with the oil circuit, then even if the car has electricity, it will not catch fire. How to start the car correctly:

1. Check the body and the surroundings of the vehicle to see if there are any obstacles around the car, whether there are suspicious oil and water stains in the parking place, see if the lights in the front and rear of the car are damaged, and whether the four tires of the car are sufficient. Nissan NV200Click to learn about the latest**2, check the engine and the dashboard in the car This step is mainly to check the interior of the car, check whether the oil and cooling water of the engine are sufficient, and whether the dashboard in the car is working normally. 3. The time to start the car can not exceed ten seconds, and after the inspection, we can start the car without any problems.

Be sure to pay attention to the time of each start can not exceed ten seconds, when it can start, the throttle should be slowly raised, if it is suddenly lifted, it will not only not start the car, but also cause damage to the vehicle.

The common faults of the automobile ignition system are as follows:

1. No ignition;

2. Weak ignition energy;

3. Ignition lag or advance.

Solutions to common faults.

1. Check whether there is a low-voltage power supply;

2. Check the power breaker or ignition signal generator;

3. Check the performance of the ignition coil;

4. Check the ignition performance of the spark plug.

If the ignition system fails, start the engine first and check that the warning light is on. If it is turned on, you should use a fault decoder to read the fault and diagnose the fault of the low-voltage circuit based on the content of the fault. If the warning light is normal, check the high-voltage circuit of the ignition system.

The ignition system of common car engines mostly adopts non-contact ignition system, and this is an example to introduce the judgment and elimination methods of common faults.

1. Spark plug failure.

1) Fault phenomenon: spark plug carbon deposit, oil pollution and overheating, etc., 2) Fault cause: spark plug touch acacia carbon deposit:

The ends of the insulator, the electrodes and the spark plug shell are often covered with a fairly thick layer of black-gray powdery soft dirt. Spark plug oil stain: fault phenomenon:

The ends of the insulator, the electrodes and the spark plug shell are covered with a layer of oil. The spark plug is overheated: the central electrode is melted, the top of the insulator is loose and soft, and most of the ends of the insulator are gray-white crusty.

2. Ignition is too late.

1) Fault phenomenon: heavy muffler, rapid acceleration carburetor tempering, high engine coolant temperature, and weak car driving.

2) Fault analysis and diagnosis: the ignition angle is incorrect.

3) Elimination method: adjust the ignition angle to the specified value.

3.Ignition is too early.

1) Fault phenomenon: idle operation is not stable, easy to stall; When accelerating, the engine has a serious deflagration sound.

2) Fault analysis: The fault is mainly caused by the inaccuracy of the ignition timing adjustment or the inaccuracy of the ignition angle assembly.

3) Elimination method: connect the ignition tester and adjust the ignition advance angle to the specified value.

4. Fault classification Ignition system faults can be divided into two situations according to their position in the ignition system: low-voltage circuit faults and high-voltage circuit faults.

1) Common faults of low-voltage circuits: insufficient battery storage; Poor or deranged wire connections; Poor battery tie-up; Damage to the distributor or Hall sensor; Damaged ignition switch or poor wiring; The ignition control unit of Jingxiao nuclear friend tube is damaged or poorly wired. Most of the diagnostic methods for low-voltage circuit faults use ammeter or voltmeter to check the fault line by line to eliminate the fault point.

2) Common faults of high-voltage circuits: high-voltage lines fall off or leakage; Breakage and breakdown of distributor cover; Ablation, rupture, breakdown of distributor fire head; The spark plug electrode gap is too large or too small; Excessive carbon deposits in the spark plug; damage to the spark plug insulator; The ignition coil is damaged or the wiring is falling off. Most of the faults of high-voltage circuits adopt the high-voltage fire test method, that is, the high-voltage line in the center of the distributor or the high-voltage line of a cylinder is unplugged, and the wire head is placed 36mm away from the cylinder block, and the engine is started to test the fire.

If there is a spark and the spark is strong, it means that the ignition system is working properly.

Are you asking about the reason why the ignition of the car does not ignite? There are several reasons for this:

1. Check the status of the battery: 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.

2. Change the right engine oil: As the temperature decreases in winter, the viscosity of the engine oil will increase, and the oil flow will be difficult, so that the engine resistance will increase.

3. Replace the spark plug in time: 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 difficult to start the cold start or even the heat engine, and it is often necessary to ignite many 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.

Hello! The failure to catch fire may be due to:

1.The start of the engine is completed by the current of the battery to push the ignition of the spark plug, resulting in the sudden ignition of the engine may have the following two reasons, the first is likely to be caused by the rust of the battery or the dripping of the battery, and the second is caused by the dampness of the engine spark plug on rainy days.

2.The battery is unstable, and abnormal changes in the electrolyte will affect the performance and reliability of the battery.

Maintenance method: 1Every two months, check whether the battery fluid in the battery is sufficient.

If the liquid level is between the upper and lower lines, it is considered appropriate. At the same time, the liquid level difference of each tank should be checked. If the liquid level is insufficient, you can unscrew the lid on the battery and pour distilled water to make up the liquid level.

Then check the terminal blocks of the battery and use an iron brush to remove dirt from the terminals.

2.If the clamp is badly defiled, you can use sandpaper to rub it along the inner wall to rub off the dirt. If the spark plug is wet, take it out and bake it in a lighter so that the moisture on it can evaporate as quickly as possible.

3.When driving in summer, the battery will be overcharged, the electrolyte will evaporate quickly, and the plate will be easily damaged. Therefore, it is necessary to check the liquid level height and electrolyte specific gravity of the battery frequently, and to fill the battery with distilled water frequently; In winter, try to avoid the battery being completely discharged, and pay attention to whether the electrolyte is frozen.

The start of the engine is completed by the current of the battery to push the spark plug to ignite, and there may be two reasons why the engine does not ignite sometimes:

1. First of all, it is likely to be caused by rust or dripping of the battery;

2. The second is caused by the dampness of the engine spark plug on rainy days.

The following is the troubleshooting method of the ignition hole cleaning system: 1. The ignition system is faulty, first start the engine, check whether the warning light is lit, and if it is lit, the fault code should be read with a fault decoder. 2. Diagnose the fault of the low-voltage circuit according to the content of the fault code; If the warning light is normal, the high-voltage circuit of the ignition system should be checked.

There are several reasons for the failure of the ignition system: 1. Difficulty in starting: it is mainly manifested as difficulty in starting, normal idle speed, normal neutral gear refueling, occasional shrugged car uphill start, and easy to stall when starting the wheel.

2. Engine misfire: Engine misfire is mainly manifested as the vehicle begins to shake after idle speed and low-speed trouble-free high-speed continuous driving for a period of time.