A car was sent to the car repair center, saying that the gearbox of the car was more jittery, and the engine always made an abnormal noise, so the owner would send it for repair. However, the owner said that the car has traveled 760,000 kilometers and only used for five years. What about the car?
Knowing that the car has traveled for so many kilometers, the maintenance worker was scared when he opened the gearbox. The gear of the gearbox has lost three, but this is because the owner’s technology is not enough, the operation is not proper, and the driving method is not correct. .
The engine of this car was also opened, because this is a delicate job, so to a more high-end repair shop, this is the car's engine. The valve of this air conditioner compressor still looks clean, because the car has been cleaned.
Look at the valve room inside, probably the situation is better, this car is running with mineral oil for so many kilometers, we must know that this oil is much worse than the synthetic oil we used, for this car ran more than 70 kilometers The car, the taxi that is not well maintained can still be accepted.
When looking at the cylinder, it is not very good. There is a lot of carbon deposit inside. The repairman said that the car is definitely very casual, because the oil quality is too bad, so the carbon deposit is too much.
From the above picture, it can be seen that the VVT ​​axis adjustment gear of the car is very aging, it has to be replaced, and the cylinder wall is also strained. The ejector of the exhaust valve also appears more or less. Dirt and carbon deposits, but the taper of the cylinder is still within the standard range.
Why is the gearbox's jitter caused by gear breakage? Just replace the gear and the shifting tank. The abnormal noise of the engine is because the VVT ​​adjustment gear is damaged. Just replace it.
For a taxi, there was no big problem when it ran for more than 700,000 kilometers. So for most of our private cars, as long as the maintenance is done, it is no problem to run for seven or eight hundred kilometers!
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