Delphi 28565336 Diesel Injector

On the VW/Audi/Seat/Skoda 2.0 TDI (EA288) platform, a failing Delphi 28565336 injector typically presents as: unstable idle / engine shuddering; hard starting, especially cold starts; knocking, ticking or 'nailing' sounds from the engine bay; black or white smoke with diesel smell; higher fuel consumption and poor throttle response.

When two or more of these appear together, suspect the injector before peripheral systems — a comparative leak-off test and live-data cylinder-balance review will isolate the failed unit without tear-down.

The documented failure modes on this platform are: injector seal / seat leakage — soot or crust around the injector base with diesel smell; injector delivery drift showing as large correction (deviation) values in live data; injector electrical faults logging single-cylinder circuit codes.

Internal wear cannot be repaired in situ — once delivery drifts outside calibration, remanufacture or replacement is the reliable fix.

Read injector deviation values in diagnostic software — a large outlier identifies the weak unit, interpreted together with fault codes. Inspect injector seats for soot and the return lines for leaks — sealing faults are common and mimic internal failure. EGR and DPF faults produce very similar drivability symptoms on the EA288 — rule them out before replacing injectors. Injector coding is required after fitting — follow the manufacturer procedure.

Never condemn a common-rail injector on a fault code alone — codes identify the circuit or cylinder, while leak-off volumes and correction values identify the component.

Each remanufactured 28565336 is fully stripped, ultrasonically cleaned and inspected; worn components are replaced with OE-grade parts. The rebuilt unit is then calibrated on a common-rail test bench against the manufacturer's specification sheet — delivery, back-leak and response are all verified before the injector is sealed and despatched with its calibration data on file.

Every unit carries a 12-month parts warranty and free UK delivery.

The 28565336 trusted family covers 27 verified vehicle fitments across 4 makes: Volkswagen, Audi, Seat and Skoda. Every fitment listed on this page is registry-verified — no scraped or assumed applications.

28565336 supersedes or cross-references 8 further OE numbers, including 28506046, HRD373, 04L130277AN, 04L130277BD, INJD144N, INJD144R, 0871023 and RF28565336. Always match the reference etched on your failed unit's body — cross-references within a family are verified equivalents, but etched numbers remain the source of truth.