Views : 170 Time : 2022-02-16 14:07:05
In the process of automobile maintenance, large oil return is a common fault phenomenon. There are many reasons for the large amount of oil return. The failure of the oil pump, oil rail and injector will lead to the phenomenon of large oil return. Today, let us take a detailed look at the oil return amount that may occur in the injector. What are the big reasons.
Possible reasons include the following six:
1 Leakage on the seat surface of the valve seat
2. Sealing ring damage and leakage
3 valve assembly stem guide wear
4. Grease nozzle needle valve guide wear
5 Damage to the valve seat and the support surface of the injector body
6 Damage to the sealing end face of the oil nozzle needle valve body
When encountering a large amount of fuel returned by the injector, do not simply check the valve assembly or the failure of the fuel injector, but conduct a detailed investigation according to the above six points to find out the real cause of the failure.
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