Workshop-quality technical information from the team that tests and remanufactures thousands of diesel injectors a year. This section covers diesel injectors and how they fail, fault codes and what they really mean, injector testing and calibration, engine-specific injector problems, the engineering behind Bosch, Delphi, Siemens and Denso designs, plus maintenance, diagnostics and the remanufacturing process itself.
Workshop-quality explanations of diesel injector fault codes — P0201–P0208, P1204, P2291 and more. Causes, diagnosis steps and proven fixes.
How failing diesel injectors present in the real world — knock, smoke, hard starts, uneven idle, leak-back and limp mode. Recognise the pattern early.
Bench testing, leak-back testing, coding and calibration of common-rail diesel injectors — how professional test benches prove an injector's condition.
Technical differences between Bosch, Delphi, Denso and Siemens VDO/Continental diesel injectors — designs, coding schemes, known weaknesses and cross-references.
Injector problems by engine — known weak points, fitment notes and fixes for the UK's most common diesel engines from Ford, VW, BMW, Mercedes and more.
Step-by-step workshop procedures — removal, fitting, coding, seating washers, torque specs and the maintenance habits that extend injector life.