Ford Focus G6DG Injectors

Ford Focus G6DG Overview

The Ford Focus with the G6DG DW10 / 2.0 HDi / 2.0 TDCi / D4204T engine was produced between 2003 and 2012. This vehicle uses Siemens VDO / Continental common rail diesel injectors (primary part number 5WS40156Z) operating at fuel pressures up to 2000 bar. The G6DG engine in the Ford Focus produces and of torque. When replacing injectors on the Ford Focus G6DG, 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 Ford Focus

• •
  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.
• •
  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.
• •
  Poor fuel economy — A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
• •
  Engine misfire under load — Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
• •
  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 Ford Focus

Other G6DG Vehicles

Related Pages

Siemens VDO / Continental DW10 / 2.0 HDi / 2.0 TDCi / D4204T — browse compatible engines, vehicles, and injectors