Fuel injector blockage and damage is a common problem, but recently some car owners reported that the copper sleeve of fuel injector was damaged. In fact, this is also one of the common faults of electronically controlled high-pressure common rail engine copper sleeve .
This fault is really annoying. Once the copper sleeve of the injector is damaged, the antifreeze will enter the tank with the return line of the diesel oil, resulting in the mixture of antifreeze and diesel oil. If the oil separator is not suck again, then the injector and the high-pressure oil pump will be damaged sooner or later.
In fact, this is an old-fashioned problem. A few years ago, many car owners, especially in the south, didn’t need antifreeze. After the antifreeze was missing, they often used tap water to replace it. This seems to be no problem in the short term, but after a long time, it will cause damage to the copper sleeve and sealing ring of the fuel injector.
Some car owners say that I always use antifreeze, but my copper sleeve is still broken. Why?
Generally speaking, fake antifreeze is bought when replacing antifreeze. Like water, fake antifreeze will also corrode the copper sleeve and sealing ring, and the above faults will occur over time .
When we find that the coolant is lacking for no reason and there is no leakage outside, we should check it in time.
Judging whether the copper sleeve of the fuel injector is damaged is very simple. First, check whether the oil in the fuel tank becomes turbid. If you can’t see clearly in the fuel tank, you can check the water collecting cup of the filter, where you can intuitively see the antifreeze. If you find antifreeze in it, you can basically judge that your copper sleeve of the fuel injector is damaged.
Now many car owners have no conflict with the use of antifreeze, but there are still misunderstandings about antifreeze. They think that antifreeze is always effective as long as it is not added.
In fact, the antifreeze will fail. The long-term antifreeze is generally valid for 2 years. It is a necessary procedure to replace the antifreeze once every 2 years, which can make your engine run more normally. After all, it costs a lot to repair the car once.