Sonata 8, what s going on with the engine clattering when starting to refuel

Cause: Missing oil.

Solution: Open the engine hood, pull out the oil dipstick, check the oil dipstick, to determine whether the oil is missing, because the lack of oil will lead to a decrease in engine lubricity, high temperature, and a long time will lead to the wear and tear of the internal gears of the engine to produce abnormal noise, which needs to be supplemented with oil to solve, and the auto repair shop needs about 100 200 yuan to replenish the oil (1 liter is determined according to the brand).

Sonata 8 FAQsTiming chain failure, as long as open the timing side shell on the side of the engine, shake the engine timing chain by hand to see if it is loose, whether there is obvious damage to judge, because after the timing chain has a problem, it will lead to abnormal noise during engine operation.

The claw rubber pier is aging. Lift the vehicle up with a lift, observe whether the claw rubber pier has aging, if there is aging and then cause a gap between the engine and the fuselage, can not be more effective buffer shaking, resulting in the collision between the engine and the fuselage to produce abnormal noise, the auto repair shop to replace the claw rubber pier plus the labor cost needs about 1000 1500 yuan.

Cause of failure:1Valve hydraulic top tube.

2.Timing belt tensioners.

3.Timing chains, timing chain tensioners.

Troubleshooting:1Preparation workers (drivers, wrenches, stethoscopes, etc.) ）2.Start the car, accelerate it, determine the part of the sound that is emitted, and then use the stethoscope to listen carefully to the part of the sound that is emitted, and then eliminate it at one time after determining the location.

3.The sound of the valve hydraulic top barrel is replaced. The timing tensioner wheel is replaced. Timing chain, or timing tensioner is replaced.

Test troubleshooting.

Go to the repair shop and check it out to see what is ringing.

The impact sound of the gear when shifting, the air intake sound and exhaust sound of using gas as the working source, and the gear meshing noise are all normal sounds. Abnormal noise (abnormal noise) can be divided into slight noise, general noise and malignant noise according to the impact on the performance of the car. Slight noise, such as the flashover sound of high-voltage electric leakage, the slight loose sound of rolling bearings, etc., the general volume is small, the degree of wear of the parts is not large, and there is no significant change for a long time, and this kind of fault can still maintain the normal operation of the car without repair.

On the issue of abnormal noise of automobiles, it is difficult for ordinary car owners to distinguish which ones are abnormal noises and which ones are reasonable abnormal noises. Only nearly 20% of the vehicles that went to the repair shop to detect abnormal noises really had problems. In the case of a turbocharged engine, there is a must be a difference between the sound and the sound of a naturally aspirated engine; Models with engine guards may also make noises due to friction; After some car owners come into contact with different cars, it is likely that they lack their own understanding of mechanical knowledge, so they can distinguish the abnormal noise of the car and avoid wasting time and energy.

Second, the identification method of car noise:

In practice, due to the limitations of working conditions, it is difficult to measure the sound of the car with special instruments, and the sound of the car can only be described and compared with the judgment of the sound in daily life. For example, the "rattle" sound caused by the dry friction of the bearing, and the "click" sound similar to the small hammer hitting the cement floor caused by the excessive valve clearance.

1. Correctly distinguish between normal and abnormal sounds.

The vibration of each mechanism in the work of the car will emit a variety of sounds, but the sound does not mean that the car is faulty, in order to avoid unnecessary disassembly, we must first distinguish between normal sound and abnormal noise. The normal vibration sound of each system component (such as the noise on the surface of the engine), the impact sound of the gear when shifting, the air intake sound and exhaust sound of using gas as the working source, and the gear meshing noise are all normal sounds. Abnormal noise (abnormal noise) can be divided into slight noise, general noise and malignant noise according to the impact on the performance of the car.

Slight noise, such as the flashover sound of high-voltage electric leakage, the slight loose sound of rolling bearings, etc., the general volume is small, the degree of wear of the parts is not large, and there is no significant change for a long time, and this kind of fault can still maintain the normal operation of the car without repair.

3. When diagnosing abnormal noise, attention should be paid to creating good auscultation conditions and trying to eliminate the interference of other noises, so as not to affect the accuracy of judgment.

It is best to consciously amplify or reduce the sound, that is, use a screw or other metal rod as a stestological instrument to contact the sound part to amplify the sound, or use a single cylinder fire cut-off to reduce the sound to meet the diagnostic needs. The auscultation site should be kept quiet to minimize human interference.

The reasons for the clattering of the Suoba engine are as follows: 1. Many new car owners will suspect that the car engine has abnormal noise when they open the front cover to check when the car is idling after returning from the first warranty inspection service. If you hear this kind of sound in the Zen car, it is not too loud, and it is generally the sound of the valve or fuel injector.

The canister solenoid valve also has this sound, but the sound is brittle. There is a way to distinguish it, that is, to give some oil to the dust at idle speed to see if the frequency changes, if the frequency does not change, it is the sound of the solenoid valve, and if the frequency changes, it should be abnormal sound at the valve. 2. When the general car starts cold, the engine sound will be slightly louder than that of the hot car, as long as the sound sounds uniform and soft, not harsh, there is generally no problem.

This is due to the fact that the gap between the cylinder wall and the piston is not yet optimally sized during cold driving, and the lubrication of the oil is not sufficient. Usually when the engine block temperature reaches about 95 degrees, the sound will return to normal. 3. The reason for the oil.

Inferior engine oil or not changing the engine oil for a long time, lack of engine oil, etc., can easily lead to increased friction between the valve and the duct and the hydraulic tappet, etc., so that the various sounds in the engine are louder. 4. If you are still not at ease through the above investigation, it is recommended to go to the nearest 4S or auto repair shop to check to confirm the cause of the failure.

The Rope 8 engine clicks and can run at high speeds. This problem cannot be solved, the engine of many cars has a clattering sound, this sound is normal, if the engine is not faulty, you can ignore this sound. If it feels very noisy, you can do the soundproofing of the engine compartment, which will be much better.

Sonata engineSonata's litre naturally aspirated engine has 162 hp and 194 Nm of torque, this engine has a maximum torque of 4,800 rpm and a maximum power of 6,500 rpm. The engine is equipped with multi-point EFI technology and uses an aluminium alloy cylinder head block. Mated to this engine is a 6AT transmission.

The litre naturally aspirated engine has 180 hp and 231 Nm of maximum torque, this engine has a maximum torque of 4000 rpm and a maximum power of 6000 rpm. The engine is equipped with D-CVVT technology and multi-point EFI beam technology, and uses aluminum alloy cylinder head cylinder delays.

Aging. If the air filter.

The occurrence of blockage or excessive dust accumulation will cause the engine to be poorly intake, and a large amount of dust into the cylinder, will accelerate the cylinder carbon deposition rate, so that the engine point is not smooth, the power is insufficient, and the fuel consumption of the vehicle will naturally increase.

If this sound keeps ringing, it is possible that the valve clearance is too large or there is an oil leak at the camshaft, and the valve clearance needs to be adjusted or the relevant oil seal needs to be replaced.

It is also possible that the engine oil used is unqualified, such as the use of thinner engine oil for high-kilometer cars, etc., which can be eliminated by changing the engine oil.

1. The humming sound caused by excessive carbon deposition is divided into engine carbon deposition and throttle.

If there is too much carbon deposit, too much carbon in the spark plug, etc., you can go to the repair shop to clean it;

2. The most common buzzing sound caused by poor filtration is the air filter.

If it is too dirty, go to the repair shop to clean or replace it;

3. The purity of gasoline is not enough to form carbon deposits inside the machine, for example, 90 gasoline is not as pure as 93 gasoline, and it can be completely replaced by high-grade gasoline;

4. Spark plug aging, engine problems, cylinder problems, idling.

problems, you need to go to a repair shop for engine repair.