Performance Testing

The performance testing of common rail injectors 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 common rail injectors will be tested before our common rail injectors are sent to customers.

Above are the tests needed to be done after the common rail injectors are finished producing. However, regular checking also very important to keep the common rail injectors perform well.

In order to make sure the common rail injectors works normally, there are some parts of common rail injectors 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 common rail injectors. The tight cap of the common rail injectors must be replaced after being disassembled for more than 5 times, as shown in the following.

② Replace the tight cap of the common rail injectors and the copper gasket of the common rail injectors.

③ Check whether the gap between the common rail injectors needle and the common rail injectors 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 common rail injectors 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 common rail injectors. If there are more questions about common rail injectors and other problems, you are welcomed to contact us, commonrailinjectors.com will do the best to help you solve your problems.