The fuel injectors spray the fuel over the cylinders of the engine. The energy combines with the air and provides the power to the engine.
If the fuel injector is faulty, it will not supply the required amount of fuel to the engine at the right time. Therefore, the vehicle would not be able to move.
If you want to test whether the fuel injector is working or not, it is essential to learn about the signs of a faulty or dead fuel injector. Therefore, you can decide whether you will have to repair or replace the injector.
If you want to know how to test whether the fuel injector is working o not, stay here and complete the reading.
Function Of Fuel Injector
The engine control unit is just like the brain of your vehicle. It can control the fuel injector and give you complete information about the working of the engine. Furthermore, it can also decide the amount of fuel that an engine should get and ensures that the machine is getting the right amount of energy at the right time.
If you want to ensure the engine’s proper working, it is indispensable to ensure that the machine is getting the right amount of fuel at the right time.
Besides it, many factors can affect the fuel injector’s working, such as the pressure, angle, and spray pattern. All of these factors are equally responsible for the smooth working of the engine.
Signs Of A Faulty Injector
If the injector is not working correctly, it will affect the working of your engine. A faulty fuel injector cannot supply the correct amount of fuel at the right time to the engine. Therefore, the vehicles will not be able to move. As a result, the user will have to check the fuel injector to find its fault.
The following are the possible signs of a faulty injector:
Rough Engine Idle
In rough engine idle, the vehicle will begin to vibrate or shake without any specific reason. A faulty fuel injector could be a reason for this. For instance, if the engine does not get the required amount of fuel, it may or may not run properly. Furthermore, if the car’s RPM is relatively low, you will have to restart the vehicle.
In this situation, the user will have to change the fuel injector, and the replacement cost is always higher.
Engine Misfiring
If the fuel injector fails to provide the required amount of fuel, the engine will not run properly and start misfiring. The clogging could be a possible reason here.
In misfiring, the vehicle cannot accelerate, especially while going uphill. Beside it, the car may take a while to accelerate. Therefore, you will have to check the fuel injector if it is working correctly.
Engine Vibration
If your vehicle has a damaged or faulty fuel injector, the engine cylinder will not be able to fire at the right time. Or, in a few cases, the engine cylinder mat does not fire at all. In this way, the vehicles begin to vibrate vigorously as the engine will have to complete the cycle with enough fuel.
With time, the frequency of the vibration will increase. Therefore, you will have to check whether the fuel injector is working well or needs repairing.
Fuel Leak
The fuel injector’s leakage means that the fuel injector is damaged; therefore, you will have to replace it. In the case of the broken fuel injector, the gasoline came out of the pipe, and as a result, the fuel could not reach the engine. As a result, the machine cannot get power.
Therefore, while you are checking the fuel injector, make sure that it is free from all the cracks and not a single shot in the fuel injector.
Testing Of Fuel Injectors
The vehicle can show different symptoms as described above if the fuel injector is not working well. Therefore, you will have to check the fuel injector, and the following are the test you can use to check the working of the fuel injector.
Simple Test
If you want to check if the fuel injector is working well or not, then start the engine and let it idle. Then, with the help of a screwdriver, touch the fuel injector and try to hear the clicking sound at the other corner.
If you can hear the sound, it means the fuel injector is working correctly; otherwise, you will have to change the fuel injector.
Injector Circuit Power Test
With this test’s help, you can check whether the fuel injector is working correctly or not for this purpose. Turn on the engine and then connect a test light or a voltmeter with the battery’s negative need. Then, gently probe both the sides of the injector wiring connector.
If one of the wires reacts and generates 12 volts or the test light gets illuminated, it means the fuel injector is working correctly.
But if the wires do not react or the light is not illuminated, you need to check the fuel injector fuse. But if the fuse is working, then you will have to check the fuel injector wiring and repair the connection. Furthermore, you can also use the seal test points with a small dab of silicon rubber.
Fuel Injector Winding Test (key off)
In this test, you will need a voltmeter and change its settings to the ohm. Well, you can perform this test with and without an injector.
Before you perform this test, remove the injector’s electrical connector. In this way, you can expose all the injector electrical terminals. Now you can connect the voltmeter leads with the terminals. In this test, the users can get a baseline ohm reading for all the injectors.
Most of the fuel injector readings come between 11 to 24 ohms. Please perform this test when the fuel injector is not heated. In case if the injector is heated, it can change the readings. In case of high resistance or an open circuit, you will have to replace the injector.
Injector Spray Pattern Test
In this test, you will have to remove the fuel injector and then check it if there is any leakage. Furthermore, you can also test the injector to ensure that it is free of corrosion.
The spray test is one of the best ways to ensure that the fuel injector is working correctly. After removing the fuel injector, you will have to attach the pressurized air with the injector inlet. Beside it, also connect the 1-volt power and the ground source to energize the injector.
The compressed air should come out from the outlet with a few traces of the fuel. You will have to observe the pattern carefully and then change the fuel injector if it is muted.
Conclusion
A fuel injector is responsible for supplying the fuel to the engine. It is crucial for the engine’s perfect functioning to ensure that the machine is getting the power. The engine will not run, and you may face difficulties.
If the fuel injector is working correctly, the engine will also run smoothly. But a fault in the fuel injector can cause many problems.
