Change Car Glow Plugs Renault Laguna

Change Car Glow Plugs

Intermediate 0h30–1h30 ~50–150£
Estimated time 0h30–1h30
Estimated labour cost ~50–150£
Difficulty Intermediate
Vehicles
Laguna I 1994-2001 6
  • 2.2 D Diesel (G8T-706 (M7))
  • 2.2 D Diesel (G8T-752 (E7))
  • 2.2 D Diesel (G8T-790)
  • 2.2 D Diesel (G8T-792 (N7))
  • 2.2 D Diesel (G8T-794)
  • 2.2 DT Diesel (G8T-760 (V7))
Laguna II 2001-2008 19
  • 1.9 dCi 110 Diesel (F9Q-674 (D6))
  • 1.9 dCi 110 Diesel (F9Q-752 (N7))
  • 1.9 dCi 110 Diesel (F9Q-754 (T7))
  • 1.9 dCi 110 FAP Diesel (F9Q-758 (17))
  • 1.9 dCi 115 FAP Diesel (F9Q-759 (27))
  • 1.9 dCi 120 Diesel (F9Q-674 (D6))
  • 1.9 dCi 120 Diesel (F9Q-750 (C7))
  • 1.9 dCi 130 FAP Diesel (F9Q-758 (17))
  • 1.9 dCi 130 FAP Diesel (F9Q-759 (27))
  • 1.9 dCi 95 Diesel (F9Q-664 (E6))
  • 2.0 dCi 150 Diesel (M9R-740 (A7))
  • 2.0 dCi 150 FAP Diesel (M9R-760 (C7))
  • 2.0 dCi 175 FAP Diesel (M9R-760 (C7))
  • 2.2 dCi 16V 140 FAP Diesel (G9T-600 (A6))
  • 2.2 dCi 16V 140 FAP Diesel (G9T-605 (D6))
  • 2.2 dCi 16V 150 Diesel (G9T-700)
  • 2.2 dCi 16V 150 Diesel (G9T-702 (D7))
  • 2.2 dCi 16V 150 Diesel (G9T-703 (E7))
  • 2.2 dCi 16V 150 Diesel (G9T-707 (E7))
Laguna III 2007-2015 20
  • 1.5 dCi 110 FAP Diesel (K9K-780 (37))
  • 1.5 dCi 110 FAP Diesel (K9K-782 (57))
  • 1.5 dCi 110 FAP Diesel (K9K-846 (R8/T8))
  • 2.0 dCi 130 Diesel (M9R-742 (G7))
  • 2.0 dCi 130 Diesel (M9R-803 (68))
  • 2.0 dCi 130 FAP Diesel (M9R-744 (N7))
  • 2.0 dCi 130 FAP Diesel (M9R-802 (A8))
  • 2.0 dCi 130 FAP Diesel (M9R-858 (P8))
  • 2.0 dCi 150 FAP Diesel (M9R-742 (G7))
  • 2.0 dCi 150 FAP Diesel (M9R-744 (N7))
  • 2.0 dCi 150 FAP Diesel (M9R-802 (A8))
  • 2.0 dCi 150 FAP Diesel (M9R-805 (J8))
  • 2.0 dCi 150 FAP Diesel (M9R-814 (P8))
  • 2.0 dCi 175 Diesel (M9R-857)
  • 2.0 dCi 175 FAP Diesel (M9R-800 (F8))
  • 2.0 dCi 175 FAP Diesel (M9R-806 (N8))
  • 2.0 dCi 175 FAP Diesel (M9R-815 (R8))
  • 3.0 dCi 235 V6 FAP Diesel (V9X-891 (A8))
  • GT 2.0 dCi 180 FAP Diesel (M9R-816 (L8))
  • GT 2.0 dCi 180 FAP Diesel (M9R-820 (U8))

What is the role of Renault Laguna glow plugs?

Glow plugs are used in diesel engines to preheat the combustion chamber before starting, particularly in cold weather. Unlike petrol engines that use spark plugs to ignite the fuel, diesel engines rely on compression ignition. Modern glow plugs also remain active after starting to reduce emissions and noise during the warm-up phase.

When should you change your Renault Laguna glow plugs?

Generally, glow plugs last between 80,000 and 160,000 km. Symptoms of failing glow plugs include: difficulty starting in cold weather, white or grey exhaust smoke on start-up, rough idle during warm-up, the glow plug warning light remaining illuminated, and increased fuel consumption.

How do I know if the Renault Laguna glow plugs need changing?

Via the EOBD diagnostic system, faulty glow plugs will trigger fault codes (typically P0380–P0384 for glow plug circuit faults). Individual glow plug resistance can be measured with a multimeter (typically 0.5–2 ohms for a good plug).

Is it difficult to change Renault Laguna glow plugs?

Difficulty level 3/5: intermediate. Glow plugs can seize in the cylinder head over time due to heat and corrosion, making removal difficult and risking breakage. Key steps: warm the engine first, apply penetrating oil, use the correct glow plug socket, unscrew carefully (do not force — a broken glow plug requires specialist extraction).

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3 models covered

Model Year Range Engines covered Fuel
Laguna I 1994-2001 1994-2001 1.6 16V, -LPG LPG,Petrol (K4M-720 (F7)), 1.8 16V, -LPG LPG,Petrol (F4P-760 (A7)), 1.8 LPG LPG,Petrol (F3P-670), 1.8 Petrol (F3P-674 (B6)), 1.8 Petrol (F3P-678), 1.8 Petrol (F3P-724), 1.8, -LPG LPG,Petrol (F3P-720 (B6)), 2.0 16V Petrol (N7Q-700), 2.0 16V Petrol (N7Q-704 (D7)), 2.… Diesel, LPG, Petrol
Laguna II 2001-2008 2001-2008 1.6 16V 110 Petrol (K4M-711 (E7)), 1.6 16V 110, -LPG LPG,Petrol (K4M-710 (D7)), 1.6 16V 110, -LPG LPG,Petrol (K4M-714 (D7)), 1.6 16V 110, -LPG LPG,Petrol (K4M-716 (57)), 1.8 16V 115, -LPG LPG,Petrol (F4P-771 (D7)), 1.8 16V 115, -LPG LPG,Petrol (F4P-775 (D7)), 1.8 16V 120, -LPG L… Diesel, LPG, Petrol
Laguna III 2007-2015 2007-2015 1.5 dCi 110 FAP Diesel (K9K-780 (37)), 1.5 dCi 110 FAP Diesel (K9K-782 (57)), 1.5 dCi 110 FAP Diesel (K9K-846 (R8/T8)), 1.6 16V 110, -LPG LPG,Petrol (K4M-824 (F8)), 2.0 16V 140, -LPG Bioethanol (E85),LPG,Petrol (M4R-726 (D7)), 2.0 16V 140, -LPG LPG,Petrol (M4R-704 (C7)), 2.0 16V… Bioethanol (E85), Diesel, LPG, Petrol

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