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Anonymous users2024-02-071. The first situation is that if it is determined that there is a problem with the valve oil seal, and there are more than two cylinders, in this case, it is best to open the engine cylinder head and replace the other valve oil seals. Now that the oil seals of the two cylinders have been damaged, the rest is not much better;
2. To replace the valve oil seal, remove the engine cylinder head according to common sense, and then replace the valve oil seal after resisting the valve. This method is more reliable, but it often takes 2 hours to encapsulate the new oil;
3. The second situation is that if there is a problem with the cylinder oil seal that is only concentrated within two, you can take the method of not dismantling the cylinder head and changing the valve oil seal, which can not only save a lot of money, but also significantly shorten the working hours;
4. If you want to replace the intake and exhaust valve seals of a cylinder, you can use a thin rope to hang the valve, remove the spark plug of the cylinder if necessary, and introduce high-pressure air from the spark plug hole, so that the valve can be resisted and the valve oil seal can be disassembled and assembled. This not only saves at least a few hours, but also avoids damage to the cylinder gasket in the cylinder head, timing disturbances, and contamination or defects in the coolant.
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Anonymous users2024-02-06Only in the case of oil burning does the valve oil seal need to be replaced. If the valve oil seal is not well replaced in time, the situation of burning engine oil will become more and more serious, if the oil is not replenished in time, there will be a risk of engine damage, and the exhaust pollution of the vehicle is very serious, which is easy to cause serious carbon deposition of parts.
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Anonymous users2024-02-05Yes, it can be replaced, but if there is no problem with the engine. Yes, it does not need to be replaced.
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Anonymous users2024-02-04The cylinder head can be replaced, disassembled.
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Anonymous users2024-02-031. The valve body of oil and gas separation is hidden in the valve chamber cover, and the intake manifold and the motor that adjusts the valve lift need to be removed first to remove the valve chamber cover.
2. The two small valve bodies in the valve chamber cover are not working properly, resulting in incomplete separation of oil and gas, and a large number of them are channeled into the intake manifold, resulting in abnormal oil consumption. The two small valve bodies and the valve chamber cover are designed as one piece and need to be replaced as a whole.
3. Replace the valve oil seal as well. When the cylinder is opened, it is recommended to replace it without dismantling. To disassemble the variable valve lift mechanism, you need to use special tools to press the spring, otherwise some parts can easily be "broken".
4. After removing the camshaft, you can see the neat 24 valves, in order to prevent the valve from falling into the cylinder after detaching from the spring, it is necessary to introduce compressed air into the cylinder, establish a certain pressure to put the valve on the cylinder head and then carry out the follow-up work.
5. With the help of tools, the valve spring can be depressed, so that the lock plate "hugged" on the valve stem can be removed, the connection between the valve and the spring is separated, and the valve oil seal pressed below can be taken out by loosening the spring.
6. a valve lock plate.
7. It can be seen that the aperture of the old valve oil seal is larger than the new one because of the aging of the rubber.
8. After replacing the 24 valve seals one by one, the camshaft is reinstalled.
9. Re-calibrate the engine timing with the timing tool.
10. The fuel injector of the engine also left "traces of time" after a long period of service, and it was cleaned up.
11. Figure: Fuel injector after cleaning.
12. Install a new valve cover. That's it.
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