DS DS5 DW12RUC Injectors

DS DS5 DW12RUC Overview

The DS DS5 with the DW12RUC 2.2L BlueHDi engine was produced between 2014 and 2018. This vehicle uses Delphi common rail diesel injectors (primary part number 28657626) operating at fuel pressures up to 2000 bar. The DW12RUC engine in the DS DS5 produces and of torque. When replacing injectors on the DS DS5 DW12RUC, always use new copper sealing washers and torque to manufacturer specifications. Each injector should be coded to the ECU after fitting.

Compatible Injectors

Common Injector Problems in DS DS5

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  Rough idle and engine vibration — Worn injector nozzles cause uneven fuel spray, leading to rough idle at low RPM. Most noticeable when the engine is cold.
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  Excessive exhaust smoke — Black or blue-grey smoke on acceleration indicates poor fuel atomisation. This is often caused by carbon buildup on the injector nozzle tip.
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  Poor fuel economy — A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
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  Engine misfire under load — Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
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  Difficult cold starting — Degraded injector nozzles struggle to atomise fuel at lower cranking pressures, causing extended crank times in cold weather.

Other Engine Codes for DS DS5

Other DW12RUC Vehicles

Related Pages

Delphi 2.2L BlueHDi — browse compatible engines, vehicles, and injectors