Performance Testing

The performance testing of injector nozzle includes electrical characteristics, accuracy, the tolerance of high temperature, low temperature, pressure as well as leakage, durability and others working conditions testing. These conditions of each injector nozzle will be tested before our injector nozzles are sent to customers.

Above are the tests needed to be done after the injector nozzles are finished producing. However, regular checking also very important to keep the injector nozzle perform well.

In order to make sure the injector nozzle works normally, there are some parts of injector nozzle needed to be checked regularly and before installing to injector.

① Check whether there is deformation, cracking, thread damage, quenching, leakage and rust in the guide sleeve, spring, gasket and tight cap of the nozzle. The tight cap of the nozzle must be replaced after being disassembled for more than 5 times, as shown in the following.

② Replace the tight cap of the nozzle and the copper gasket of the injector nozzle

③ Check whether the gap between the nozzle needle and the nozzle shell is within the standard range and whether it reaches the standard for use

④All parts should be examined for wear under a microscope at least 20 times larger

⑤ Nozzle tight cap deformation, cracking, thread damage, quenching, leakage, will lead to black smoke vehicle cap, fuel injector damage.

⑥Injector opening pressure greater than or less than the specified range may cause injector damage.
⑦ Failure to replace wearing parts in time during maintenance may lead to fuel injector damage.

These are some precautions you need to know to maintain an injector nozzle. If there are more questions about injector nozzles and other diesel problems, you are welcomed to contact us, liweinozzle.com will do the best to help you solve your problems.