DCR02501AA1 — Technical Research
Delphi DCR02501AA1 (Delphi LDCR02501AA1) injector for the PSA 1.9 D (DW8/DW8B) indirect-injection diesel in the Citroen Berlingo/Jumpy and Peugeot Partner/Expert. Fed by a Lucas/Delphi distributor pump — no electronic injector coding. Remanufactured, calibrated, 12-month warranty. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Nozzle coking / poor spray pattern; Water-in-fuel corrosion.
Delphi DCR02501AA1 1.9 D Diesel Injector (Citroen Berlingo/Jumpy, Peugeot Partner DW8B)
Delphi DCR02501AA1 (Delphi LDCR02501AA1) injector for the PSA 1.9 D (DW8/DW8B) indirect-injection diesel in the Citroen Berlingo/Jumpy and Peugeot Partner/Expert. Fed by a Lucas/Delphi distributor pump — no electronic injector coding. Remanufactured, calibrated, 12-month warranty. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Nozzle coking / poor spray pattern; Water-in-fuel corrosion.
A leaking or out-of-calibration injector unbalances cylinder fuelling, felt as a shake at idle.
Excess back-leakage bleeds rail/line pressure during cranking, causing long or failed starts.
Out-of-range delivery or pressure deviation triggers a torque cut and limp home.
Poor atomisation or a dribbling nozzle over-fuels the cylinder.
Cylinder-specific injector, balance or fuel-metering fault codes are logged.
- InstallationNo electronic injector coding — the DW8 is an indirect-injection diesel fed by a Lucas/Delphi distributor pump; set injector opening pressure on the bench.
- InstallationRenew the copper combustion washer and leak-off seals; torque the clamp/nut to manufacturer spec.
- MisdiagnosisRead live back-leakage and per-cylinder contribution data to confirm the weak cylinder before removal.
- TestingBench-test across delivery and back-leakage points and verify spray pattern before refit.
- WarningConfirm fitment by OE number and engine code before ordering; injector sub-variants are not always interchangeable.
What is injector DCR02501AA1?+
DCR02501AA1 is a Delphi diesel injector (distributor-pump fed) diesel injector for the PSA 1.9 D (DW8 / DW8B). It is supplied remanufactured, bench-tested and calibrated to OEM specification.
Which vehicles use DCR02501AA1?+
It is fitted to the PSA 1.9 D (DW8 / DW8B) — including Citroen Berlingo 1.9 D (WJY/WJZ, DW8B); Citroen Jumpy 1.9 D (WJZ, DW8B); Peugeot Partner 1.9 D (WJY/WJZ, DW8B); Peugeot Expert 1.9 D (WJZ, DW8B). Confirm fitment by OE number and engine code.
What type of injector is DCR02501AA1?+
It is a Delphi Diesel Injector (distributor-pump fed). Always confirm the OEM markings on the injector body before fitting.
Does DCR02501AA1 need coding when fitted?+
No — the 1.9 D (DW8/DW8B) is an indirect-injection engine fed by a distributor pump, so no electronic injector coding is required.
What are the symptoms of a failing DCR02501AA1?+
Common signs are rough idle and vibration, hard starting, power loss or limp mode, black smoke and an engine-management light.
What causes these injectors to fail?+
Most failures come from poor fuel filtration, contamination and water in the fuel leading to wear, high back-leakage and nozzle coking. Fix the cause before fitting replacements.
Is a remanufactured DCR02501AA1 as good as new?+
A properly remanufactured injector is stripped, fitted with new wear parts, reassembled and recalibrated on a common-rail test bench to OEM tolerances, then supplied with a warranty.
Should I replace one injector or the full set?+
Replace the confirmed faulty injector first. On high-mileage engines fitting a matched set reduces the chance of a repeat fault, but it is not mandatory if the others test within spec.
Do you bench-test the injector before dispatch?+
Yes. Every unit is tested for delivery, back-leakage and spray pattern on a calibrated common-rail tester before it leaves us.
Is delivery and warranty included?+
Yes — the price includes free UK delivery and a 12-month warranty.
Is DCR02501AA1 a common-rail injector?+
No. The PSA 1.9 D (DW8/DW8B) is an indirect-injection diesel fed by a Lucas/Delphi distributor pump. DCR02501AA1 is a pump-fed mechanical injector; opening pressure is set on the bench, with no electronic coding.
Which vehicles use DCR02501AA1?+
The PSA 1.9 D (DW8B) in the Citroen Berlingo/Jumpy and Peugeot Partner/Expert (WJY/WJZ). Confirm the engine code and PSA reference before ordering.