How do I spot a faulty injector?
A faulty injector rarely fails outright. The problem usually creeps in slowly, with symptoms that are easy to blame…
Guides
Practical knowledge from the workshop: injectors, Common Rail systems, injection pumps and more. Explained concisely by INP Dieseltechnik — so you know what is going on inside your vehicle.
Common Rail vs. unit injector: what is the difference?
Anyone who drives a diesel or works in a workshop comes across both terms regularly. But what lies behind…
Repair or replace an injector — when is which worthwhile?
A faulty injector does not automatically mean buying new. In many cases professionalrepair is the more economical choice —…
The injector test report — what is in it and why it matters
After an injector repair you often hear nothing more than: “All fine, you can fit it.” No document,no measured…
Piezo injectors: what they are and how they are repaired
Piezo injectors are regarded as the precision instrument among injection systems. They switch faster,meter more accurately and allow more…
Spotting the symptoms of a faulty high-pressure pump
Many symptoms of a faulty high-pressure pump look like an injector fault. Juddering, difficult starting, loss of power —…
Cleaning petrol direct injection — when and why
Petrol engines with direct injection (GDI — Gasoline Direct Injection) have been widespreadsince the 2000s. They use less fuel…
Poor fuel — what it does to injectors and pumps
Injectors and high-pressure pumps are precision components with manufacturing tolerances in themicrometre range. Fuel is not just an energy…