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fuel injector is a valve. The gas or diesel fuel can be delivered to the right place in the right amount at the right time, mixed with air and burned in the engine.
The injector is the most critical system part assembly in the electronic fuel injection engine. During cleaning and maintenance, it is very important to ensure the balanced amount of fuel injection of each cylinder and reduce dripping.
The difference between the fuel injection volume of each injector in a unit time should not exceed 3 to 6% of the total fuel injection volume, otherwise it should be replaced; under the specified pressure, use a special test liquid for dripping test, allowing 1 drip per minute ~ 2 drops of special test liquid.