May I ask if the car engine is useless after ten years of repair

1.The ejector rod machine itself is noisy because of the design problem, the parts of the new car are not seated after the assembly, not very tight, after the run-in, the valve and other components are gradually combined with normal, there will be a certain clearance, after the run-in period to adjust the valve clearance, this is normal. The gas distribution of the ejector rod engine is a rigid transmission, the weight of the transmission parts is larger, and there is no certain buffer like a small chain, the expansion coefficient of various different materials is not the same after the heat engine, and the gap will increase, so the noise of the ejector rod machine is generally less when the car is cool, and the noise is larger after the hot car, which is normal, and the viscosity of the oil becomes smaller after the hot car, the oil film becomes thinner, the lubrication effect becomes worse, and the sound will become louder.

2.As long as the valve clearance is adjusted to normal, there is no other adjustable, the valve clearance is about millimeters, and it should be adjusted when the engine is cold, and the noise and vibration of the ejector rod engine are relatively large.

3.The oil temperature of the air-cooled motorcycle engine will exceed 100 degrees when it is working normally, and the engine is on fire, so it will definitely be very hot, and the temperature is already high now, and the gap between the various parts of the new car is tighter, so the heat will be greater, as long as the oil is normal, the oil pump is also normal, there is no problem, if you run a long distance, you should pay attention to a proper rest on the way.

4.The clutch line of the new car is tighter, the clutch handle stroke is large, if you like to put a little bit on the feeling of walking the car, you can loosen the clutch line a little, so that you can meet your requirements, and the oil clutch can start smoothly with a good fit. The clutch line is looser and looser the more you use it, and the gap will naturally become larger after a period of time.

5.If it is a cold start, it is best to pull the damper first, start and warm up before sending the damper back. The damper is used for cold starting, not in cold weather, as long as the engine temperature is reduced, it is a cold car, not a cold car in winter, and a hot car in summer.

The valve closure of the new car is not very tight, and the cylinder compression is not very ideal, so the starting performance is not as good as the car after full running-in. If the electric start is not good for fire under the same situation, but the foot start is very good, it is recommended to check whether the gap between the sparks is too large and whether the high-voltage sparks are not strong enough.

6.The first few problems should not be a big problem, they are all common conditions that will occur in new cars, as long as they are adjusted, they will not leave any sequelae, don't worry.

7.It's not a mechanical issue, it's something that many new cars will have.

However, of course, the run-in period can be adjusted, if your car valve is very loud, you can adjust it at any time, but because it may not be completely seated, so it is possible that the valve clearance will become larger after running for a period of time after the adjustment. You can control this.

Generally, the engine will be loaded directly after the simple detection after the first line is inspected, and the vehicle will be loaded directly after the assembly of the finished car by the test personnel and then make a single vehicle debugging will be packaged into storage or shipped, and it will not be cold grinding at all, which has nothing to do with the sound of your car, and the sound of the ejector rod valve is a very common phenomenon, if the sound is normal after debugging, it will be fine.

The regulations for domestic cars are ten years of use, and in fact, there is not much implementation. The engine depends on whether it is domestic or imported, and foreign engines can still be used if the engine is scrapped, such as sofim

As long as it is under normal maintenance, more than 150,000 kilometers is not a problem.

After the engine is overhauled, it means that the engine has been used for a certain number of years.

As long as the parts replaced inside are mostly normal parts, and the assembly is relatively good, it has no effect on the engine.

After the car has been driven for a certain number of years or kilometers, the power performance is significantly reduced due to the serious wear and aging of the internal parts of the engine. At this time, it is necessary for the engine to replace valves, pistons, cylinder liners, boring cylinders, grinding shafts, etc. Domestic cars generally need to be overhauled after about 100,000 kilometers, and imported cars need to travel more than 100,000 kilometers.

After a major overhaul, engine performance can be restored to more than 90% of its previous level.

Hello, after the engine has been overhauled, if the technical condition is passed, then the engine performance can be restored to more than 90% of the previous level. Under normal circumstances, the service life of the engine after overhaul is lower than that of the original engine, which is also an indisputable fact. But if you take good care of it, you won't have any problem driving it for 10 years.

Engine overhaul is generally to replace broken or seriously worn parts with new parts, because the cost of engine overhaul is very high, many users will choose to repair in the repair shop, and the parts will also use analogues or even dismantled parts, so that the reassembled engine, performance and reliability will be greatly reduced. Hope it helps!

Who can come up with this Things that can't be seen in the follow-up It is recommended not to dwell on how long it will take to see how much money you spend on maintenance Small problems must be repaired directly Big problems directly replace the engine dismantling parts.

Personally, I recommend looking at the vehicleResidual valueand, if necessary, choose a major overhaul; If the vehicle is barely functional, and will be disposed of soon, then there is no need for major repairs. ActuallyCar enginesNo matter how rigorous the design is, there will always be oil consumption. It's just that if the oil consumption is too high, it isBurn the oilFinish.

As for whether the car burns engine oil or not, it can be divided into the following two situations:

1. The age of the car is too large, and the engine is naturally worn out (this pick-up should be repaired): when the engine service life is too high, and the gap between the piston ring and the cylinder wall, the valve and the valve guide and other parts are too large due to wear, the oil will easily pass through the gap and enter the combustion chamber, resulting in the phenomenon of burning engine oil.

This level of oil burning can only be used to overhaul the engine, and the problem of burning oil can be solved by replacing excessively worn components such as piston rings and cylinder liners, valves and valve guides.

2. Design defects (difficult to repair): For example, the legendary Volkswagen engine is equipped with this engine, and this type of oil burning phenomenon is due to defects in the engine design. For example, the piston ring clearance design is too large, and the design defects of oil and gas air separation are defective.

If Senyou burns engine oil for this reason, then you have to wait for the manufacturer to come up with a solution, and the general 4S shop or repair shop basically can't solve this kind of problem.

1. Check the engine: First of all, check the condition of the engine to see if any parts are faulty or aging. 2. Replacement parts:

If a component is found to be faulty or aging, it should be replaced as soon as possible. 3. Adjust the engine: After installing the new parts, the engine should be adjusted to meet the manufacturer's standards.

4. Test the engine: After the adjustment is completed, the engine should be tested to see if it can work properly. 5. Maintenance of the engine

After repair, the engine should be serviced and maintained regularly to prolong its service life.