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Change Car Spark Plugs

Easy 0h30–3h30 ~50–350£
Estimated time 0h30–3h30
Estimated labour cost ~50–350£
Difficulty Easy
Vehicles
Laguna I 1994-2001 17
  • 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))
  • 2.0 Petrol (F3R-722 (E7))
  • 2.0 Petrol (F3R-723 (E7))
  • 2.0 Petrol (F3R-728 (J7))
  • 2.0 Petrol (F3R-729 (K7))
  • 2.0 Petrol (F3R-768)
  • 2.0, -LPG LPG,Petrol (F3R-611 (K6))
  • 2.9 V6 24V Petrol (L7X-700 (A7))
  • 2.9 V6 24V Petrol (L7X-701 (B7))
Laguna II 2001-2008 20
  • 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 LPG,Petrol (F4P-770 (C7))
  • 1.8 16V 120, -LPG LPG,Petrol (F4P-774 (C7))
  • 2.0 16V 135, -LPG LPG,Petrol (F4R-712 (J7))
  • 2.0 16V 135, -LPG LPG,Petrol (F4R-713 (K7))
  • 2.0 16V 135, -LPG LPG,Petrol (F4R-714 (67))
  • 2.0 16V 135, -LPG LPG,Petrol (F4R-715 (77))
  • 2.0 16V 165 Turbo Petrol (F4R-765 (R7))
  • 2.0 16V 165 Turbo, -LPG LPG,Petrol (F4R-764 (Q7))
  • 2.0 16V 170 Turbo, -LPG LPG,Petrol (F4R-786 (87))
  • 2.0 16V 170 Turbo, -LPG LPG,Petrol (F4R-787 (97))
  • 2.0 16V IDE 140 Petrol (F5R-700 (A7))
  • 3.0 V6 24V 205 Petrol (L7X-731 (E7))
  • 3.0 V6 24V 205 Petrol (L7X-733 (M7))
  • GT 2.0 16V 205 Turbo, -LPG LPG,Petrol (F4R-784 (G7))
Laguna III 2007-2015 7
  • 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 170 Turbo Petrol (F4R-813 (J8))
  • 2.0 16V Turbo 170, -LPG LPG,Petrol (F4R-811 (J8))
  • 3.5 V6 24V 235 Petrol (V4Y-713 (B7))
  • GT 2.0 16V 205 Turbo, -LPG LPG,Petrol (F4R-800 (K8))

What is the role of Renault Laguna spark plugs?

The spark plug generates a spark at the precise moment needed to ignite the air/fuel mixture in the combustion chamber of petrol (or LPG) engines. The engine management system controls ignition timing.

When should you change your Renault Laguna spark plugs?

Manufacturers provide replacement recommendations; refer to your vehicle maintenance booklet. Generally replace every 60,000 km (45,000 km for severe use). Some vehicles with long-life plugs (titanium, platinum, iridium) can go 100,000–150,000 km.

How do I know if I need to change my Renault Laguna spark plugs?

Via the EOBD system (mandatory since 2001 on petrol cars), faulty spark plugs will trigger fault codes, typically P0301–P0304 (misfire, cylinders 1–4). Symptoms include: difficulty starting, misfires, reduced engine power, increased fuel consumption.

Is it difficult to change Renault Laguna spark plugs?

Difficulty level 2/5: technically easy but requires specific tools (spark plug wrench, torque wrench). Key points: wait for cold engine, clean plug well with compressed air before removal, never use a dropped plug, do not grease threads, hand-tighten then torque to specification.

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