How to

How to replace Common Rail injectors

Share Resource:

Resource Highlights

The correct coding is vital when replacing a common rail injector. In this Masters Of Motion video, our Delphi Technologies expert shows you how to use Blue Tech diagnostic tools to correctly and safely code replacement common rail injectors.

Diesel Fuel Systems How to Technicians 1 min read

Are common rail injectors all the same?

No two common rail injectors are exactly the same, even if they are the same type and make. They are extremely precise instruments, so any variations – no matter how small – created during the manufacturing process will affect their performance. At this level of precision, these tiny changes are significant, so each injector needs to be considered unique.

What are the codes found on common rail injectors?

These are codes that are generated when testing the injectors. They relate to the individual characteristics of each one.

What are the codes called?

The codes have many names: Trim code, Compensation code, C2I, IMA, IQA and C4I.

Why do I need to code an injector into the vehicle’s engine management system?

Each common rail injector is unique with its own characteristics and manufacturing variations. When you code an injector into the vehicle’s engine management system, you are telling the vehicle these characteristics so it can compensate for their differences. This is why coding injectors when fitting them is essential.

SIGN UP TO FIND MORE

Fill yp your details to hear more from our experts and get the latest updates from Delphi.

First Name*

Surname*

I have read and accept the Terms of Use and Privacy Policy

I agree to receive personalised marketing emails.

I would like to be kept up to date with promotions/marketing/features/events.

You can change your mind at any time by clicking the unsubscribe link in the footer of any newsletter email you receive from us, or by contacting us at [email protected]