One of the car spark plugs is not tightened, can you tell from the sound?

The car spark plug has one that is not tightened, which can be judged by the sound. The sound of the porphyron leaking can be used to tell if the spark plug is tightened.

When the engine is running, there will be a pop leaking sound, at this time, it is necessary to consider that the spark plug is not tightened, you can go to the auto repair shop for maintenance. Although the spark plug is a small one of the auto parts, its role can never be ignored. The spark plug needs to dissipate heat, and if it is not tightened, it will cause the spark plug and the cylinder head to fit poorly, and the heat dissipation will be poor.

Car manufacturers may not choose the best performing spark plug equipment, but they can guarantee the proper operation of the vehicle. When the vehicle enters the maintenance process, it is faced with the choice of a newer spark plug. The brands of spark plugs that are more commonly seen on the market are:

Bosch in Germany, denso in Japan.

Hello, yes, the car will shake when it catches fire. If you have any questions, you can ask [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

It does not matter. Spark plugs, commonly known as fire nozzles, are used to discharge the pulse high-voltage electrical discharge from the high-voltage wire, break down the air between the two electrodes of the spark plug, and generate an electric spark to introduce the mixed gas in the gas cylinder. The main types are:

Quasi-type spark plugs, edge body protruding spark plugs, electrode type spark plugs, seat type spark plugs, polar type spark plugs, surface jump.

Hello, I can't tell the difference. If you don't twist it at all, you know it, and it's hard to hear if you almost tighten it with it. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Spark plug. There are two types of common failures that occur. One is that the spark plug has deposits, and the other is that the spark plug is severely ablated.

1) Sediment on the spark plug: spark plug insulator.

Deposits sometimes stick to the tip and between the electrodes. Car owners should not underestimate this deposit. In severe cases, this condition may cause the engine to not work properly.

After cleaning the spark plugs, the vehicle can be operated normally for the time being, but a similar situation will occur soon after. In fact, the presence of spark plug deposits is only a superficial phenomenon, which may be a sign of a problem with other mechanical parts of the vehicle.

i) Oily deposits on spark plugs: When oily deposits appear on spark plugs, it is an indication that lubricating oil has entered the combustion chamber. If there are only oily deposits on individual spark plugs, it may be caused by a damaged valve stem oil seal.

However, if this deposit is adhered to the spark plugs of each cylinder, it indicates that the cylinder has burst oil. In general, in the air filter.

In the case of blockage of the ventilation device, the cylinder is very prone to the phenomenon of oil jumping.

ii) Black deposits on the spark plugs: Black deposits on the spark plug electrodes and inside usually indicate that the gas mixture in the cylinder is too concentrated. The owner can increase the engine speed for a few minutes to burn off the black soot layer left on the electrodes.

2) Spark plug ablation: When the owner finds that there is a scar or damage on the top of the spark plug, and the electrode is melted or ablated, it indicates that the spark plug has been destroyed, and the spark plug should be replaced. During the replacement process, the owner can check the symptoms of spark plug ablation and the change in color.

Hello There is an abnormal sound after replacing the spark plug, and the details of the abnormal sound after replacing the spark plug, there is more information about the abnormal sound after replacing the spark plug, and the spark plug appears after changing the spark plug.

The reason why the spark plug engine becomes louder is that the replaced spark plug model does not match the situation.

There is an impact, this situation may be that there is a foreign object falling into the cylinder in the process of replacing the spark plug, and it is necessary to go to the repair shop as soon as possible to check to avoid unnecessary losses.

In this case, it may be a problem with the spark plugs, it is recommended that you replace another set of spark plugs, I hope you can be satisfied and wish you a happy life.

If the spark plug is not tightened, the spark plug and the cylinder head will not be tightly bonded together, and the heat dissipation effect will not be better. In the slightest case, the main electrode of the spark plug will be too hot, reducing the service life of the spark plug. If the situation is severe, it will lead to early ignition or detonation, and there is even a high risk that the spark plug electrode will fall off and the cylinder will be pulled.

Li Jixun. The spark plug needs to be replaced, and there will be the following symptoms:

1. If the acceleration is not smooth and the spark plug is not tightened, it will cause the electrode gap between the spark plugs to become larger, resulting in unstable ignition energy, and it may even fail to ignite, which will eventually lead to no line during the acceleration of the vehicle, and it is easy to eat a meal.

2. The engine has the phenomenon of shrugging, when the vehicle is driving in certain speed ranges, the engine has the abnormal phenomenon of shrugging. At this time, if you accelerate sharply, it will lead to insufficient engine power, fuel consumption will slowly rise, and sometimes black smoke will come out of the exhaust pipe.

3. If the car is very difficult to start suddenly, or it cannot be started at all, it means that the spark plug has an abnormal situation and needs to be dealt with in time.

1. The engine has a "squeak" sound, which is the same as steam or air coming out of the engine. Possible problems, overheating of the engine, check the cooling system. The exhaust system is clogged, the vacuum tube is leaking, or it is broken.

2. Stepping on the accelerator, I found that the acceleration was not obvious, there was a lack of power, and the engine had a hysterical sound. The most likely time is when the engine is hot, or cold, or when there is a lack of oil. The causes of such problems can be divided into, air filter, spark plug, ignition wire, gasoline, gasoline filter, vaporizer, oil pump and other problems.

Check the air filter, whether it is dirty, whether the spark plug is old and has to be replaced, the ignition coil is broken, the gasoline is not clean, such as water in the oil circuit. There is also a check on the oil pump.

3. When accelerating, the engine will have a whirring sound, or when decelerating, it will also appear, in short, with the rpm change, the sound volume changes. The possible reason is that the power steering oil is missing, and the fuel is filled. Generator bearings may be damaged.

Power steering pumps, water pumps, will produce similar noise.

A large spark plug gap will increase the resistance, causing the spark plug to break through the mixture between the two electrodes and increase the voltage required for flashover. The engine will not be easy to start.

Because the voltage increase required to overcome the spark plug gap, there is not enough energy left to generate an electrical spark between the spark plugs, which will lead to misfires and high emissions. The spark plug gap is small and the discharge distance is short, so that the fire core is not fully "developed", and the heat is also absorbed by the side electrodes, which reduces the energy of the spark. It is also prone to leakage due to carbon deposits.

It is also normal for used spark plug clearances to be larger than they were during the initial installation. For new spark plugs, the two surfaces of the spark plug electrode are smooth and flat, and as time increases, the electrode becomes smoother and the spark plug gap increases. Therefore, when adjusting the gap, it is necessary to consider that the gap becomes longer with the increase of use.

Air leakage, if you screw too little, it is easy to be pressed out by high-pressure gas, which is very dangerous and damages the screw buckle.

Hello new spark plug, tighten it and tighten it again 1 2 turns.

Old spark plugs, after tightening, tighten again 1 4 turns.

Don't overtighten it, be careful with slippery wires

When the spark plug is loose, it will cause the engine cylinder to stall and the engine failure alarm.

The tightening torque of the 16mm spark plug is 25-30nm, and it should be noted when installing the spark plug, which can easily cause the spark plug to trip or break.

The phenomenon and consequences of untightened spark plugs.

1.If the spark plug is not tightened, the performance of the car will be reduced, and even the car will not start;

2.If the spark plug is not tightened, there will be a sound of air leakage in the middle of the trip;

3.If the spark plug is in a normal state, the sound of the engine turning is very smooth, and at the same time, the driving power is relatively sufficient, and the noise is relatively small.

Although the spark plug is a small part, its role cannot be ignored. The quality of the spark plug affects the rotation of the engine. Therefore, it is necessary to take care of the spark plugs and replace them immediately.

The maintenance of the spark plug during use can extend its service life and reduce fuel consumption. The maintenance of spark plugs is mostly done with regular inspections, regular replacement and regular cleaning. When it is found that the spark plug has carbon deposits, it can be soaked in kerosene for a period of time, slowly brushed with a fine steel brush, and then dried with compressed air before use.

The service life of the spark plug is related to the electrode material, the spark plug brand, and other factors. Most ordinary nickel alloy spark plugs need to be replaced once after 20,000 kilometers of use, and the service life is the shortest. about 40,000 kilometers to replace platinum spark plugs; Iridium spark plugs can be replaced at around 6-80,000 km and have a long service life.

However, these are only some reference values and depend on the conditions under which the spark plug will be used.

Pull out a steel wire and place your right hand close to the spark plug. When I was in the car, I could feel that the spark plug was not tightened.

If the spark plug is not installed, it will cause the curvature of the spark plug gasket to deform, resulting in air leakage and power drop during engine operation, blocking the heat dissipation channel, so that the heat absorbed by the spark plug from the combustion chamber cannot be transmitted. The accumulation of heat causes the internal temperature of the spark plug to increase dramatically, and the ignition end, including the insulator skirt, center electrode, and side electrode, is burned out.

It will cause insufficient ignition combustion and carbon deposit, or the engine lacks cylinders, and the spark plug needs to dissipate heat, and if it is not tightened, it will cause the spark plug and the cylinder head to fit poorly, and the heat dissipation will be poor.

At worst, the main electrode of the spark plug will be overheated and the life will be reduced, and the heavy will cause early ignition and detonation, and even the spark plug electrode will fall off and pull the cylinder.

How the spark plug works:

1.The electric plate of the spark plug is ignited by repeated and continuous power generation, and the mixture in the cylinder is ignited, and at this time, the other parts of the ignition system generate a timing of high-voltage electrical pulses, forming sparks and generating the energy required to provide the power output of the engine.

2.The structure of the spark plug is made of a slender metal electric plate through a ceramic material with insulating function, and there is a metal shell around the lower part of the insulator, which is screwed on the cylinder and the cover of the operator, and at the bottom of the metal shell, an electrode is welded to form a grounding effect with the automobile body. In addition, the ends of the electrodes** must be separated by a small discharge gap.

3.Then, the high-voltage current from the distributor will pass through this ** electrode to conduct electricity, and then discharge in the discharge gap at the bottom end of the spark plug, then the spark plug plays its role to produce a spark combustion mixture, and the engine will get energy and output power.

4.Thus, a spark plug is a device that ignites a mixture of gasoline and air that enters the engine for combustion. Working under the harsh conditions of high temperature and high pressure, it is one of the wearing parts of gasoline engine, which plays a very important role in the operation of the engine, and has a lot to do with whether the car is fuel-efficient or not, and whether the operation is stable.

Photo by Shi Lili of Pacific Automobile Network).