Performance Test

Discover the in-depth performance evaluation of HEUI pumps at heuipump.com. Our testing process assesses key factors such as electrical performance, precision, durability in extreme temperatures, pressure resistance, and leak prevention. Explore our catalog to ensure your chosen HEUI pumps meet the high-performance standards required for your specific needs.

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

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

② Replace the tight cap of the HEUI pumps and the copper gasket of the HEUI pumps

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