Made in China Good Quality 5263262 Diesel Fuel Injector Common Rail Injector Engine Parts

In the process of automotive engine troubleshooting, accurate determination of whether the injector is working properly, is the key link to uncover the fault, restore the power of the car, you need to use a variety of methods of step-by-step investigation.

Visual inspection is the first step. Open the engine compartment, find the injector, check its appearance with or without damage, signs of leakage. If the injector is full of oil stains around the injector, it is very likely that there is a sealing problem, fuel is seeping out of the gap, which not only wastes fuel, but also affects the normal operation of other parts in the engine compartment, and even planted a hidden safety hazard. In addition, pay attention to the plug connection is solid, loose plug will block the injector to receive electrical signals, resulting in its inability to work.

Listening to the sound to recognize the “disease” is also very effective. Start the engine, close to the injector to listen carefully. Normal operation, the injector receives an electrical pulse every time, it will issue a regular and crisp “click” sound, that is the nozzle open and close the sound of fuel injection. If there is no movement, the probability is that the injector is not energized; if the sound is chaotic, the frequency is abnormal, meaning that the rhythm of fuel injection is disordered, may be the internal parts of the stagnation, affecting the uniformity of fuel injection.

With the help of professional diagnostic instrument connected to the OBD interface of the car, read the data flow related to fuel injector. Focus on the injection pulse width, injection volume and other values, compared with the standard parameters of the vehicle maintenance manual, the deviation is too large is abnormal. For example, under idling conditions, the injection pulse width far exceeds the normal range, perhaps the injector carbon blockage, resulting in poor injection, the computer will automatically lengthen the pulse width, more fuel injection to maintain operation.

You can also use the exhaust gas test to assist in judgment. Run the engine, test the exhaust composition, if the exhaust is thick black pungent, hydrocarbons exceed the standard, the probability is that the injector spraying too much fuel, fuel is not fully combusted on the discharge; on the contrary, the color of the exhaust is too light, the power of the weak, may be insufficient fuel injection, it is difficult to output strong power.

Through the appearance, sound, data flow, exhaust gas test multi-dimensional comprehensive consideration, maintenance personnel will be able to accurately lock the injector condition, timely repair or replacement, so that the engine back to smooth operation.