Quality Control

Production & Installation

As product’s quality is our priority, the production of C7/C9 diesel HEUI injectors is very strictly controlled.

The C7/C9 diesel HEUI injectors must be produced in dust-free workshop. The C7/C9 diesel HEUI injector’s production procedures include pre-heat treatment, post-heat treatment and CNC surface treatment. In each produce process, we strictly check every part’s quality and exclude bad quality parts so as to make sure our products meet usage standard.

C7/C9 diesel HEUI injector’s Installation

When install C7/C9 diesel HEUI injector, there are some precautions you need to know to prevent the C7/C9 diesel HEUI injectors working failure:

① Clean the C7/C9 diesel HEUI injector in an ultrasonic cleaner for 3-5 minutes before installation, so as to make the stains, dust, rust-proof oil oxides, paraffin base, naphthenic base, intermediate base, salt, lead naphthenate, zinc naphthenate, sodium petroleum sulfonate, barium petroleum sulfonate, calcium petroleum sulfonate, tallow diamine trioleate, rosin amine on the surface of the C7/C9 diesel HEUI injector fall off.

② Use compressed air to clean the cleaning fluid attached to the surface of the C7/C9 diesel HEUI injector after cleaning, and clean it up to the standard of usage. The details are as below:

● When installing the C7/C9 diesel HEUI injector, make sure that each part of C7/C9 diesel HEUI injector can be moved smoothly in it.

● If the C7/C9 diesel HEUI injector is not installed in accordance with the standard, it may cause serious damage to the C7/C9 diesel HEUI injector and C7/C9 diesel HEUI injector.

Warranty

heuiinjector.com has a mature business trading system, and as we all know, good service is one of main reasons to makes long term business cooperation with customers. Therefore, heuiinjector.com provides services such as replace, repair, refund etc. to our customers, as well as 6-12 months of warranty period for each patch of C7/C9 diesel HEUI injectors that sent to our customers. And when you meet product’s quality problem, we will help you to solve it until you are satisfied.