Renault Laguna K9K780 Injectors

Renault Laguna K9K780 Overview

The Renault Laguna with the K9K780 1.5L dCi engine was produced between 2007 and 2015. This vehicle uses Siemens VDO / Continental common rail diesel injectors (primary part number A2C59511606) operating at fuel pressures up to 2000 bar. The K9K780 engine in the Renault Laguna produces and of torque. When replacing injectors on the Renault Laguna K9K780, 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 Renault Laguna

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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 Renault Laguna

Other K9K780 Vehicles

Related Pages

Siemens VDO / Continental 1.5L dCi — browse compatible engines, vehicles, and injectors