Testing fuel injectors may become necessary when dealing with a stubborn rough running engine condition. I'm sure you have seen many commercials about fuel injector cleaners and maybe even advertisements from gas companies stating if you use their fuel your engine will run better.
Fuel injection cleaning services are also a popular up sell at many auto repair facilities. Often these cleaners and services are purchased without actually knowing if they are needed. These gas delivering components can be tested and diagnosed.
An injector is nothing more than an electrically operated solenoid that is actuated to allow fuel to flow at a set rate. Although many think that this is a complicated component the operation is actually quite basic. The solenoid is energized and held open until it delivers the correct amount of gas and then turned off.
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