Change Car Spark Plugs Subaru Legacy

Change Car Spark Plugs

Easy 0h45–2h00 ~75–200€
Temps estimé 0h45–2h00
Coût estimé ~75–200€
Difficulté Easy
Motorisations
Legacy 1989-1993 1
  • 2.2i 16V Gas (EJ22E)
Legacy 1994-1998 3
  • 2.2i 16V Gas (EJ22E)
  • 2.2i 16V Gas (EJ22E)
  • 2.5i 16V Gas (EJ25D)
Legacy 1998-2003 1
  • 2.5 16V Gas (EJ251)
Legacy 2004-2010 1
  • 2.5i Gas (EJ253)
Legacy 2008-2015 2
  • 2.5 SOHC Gas (EJ253)
  • 3.6 Gas (EZ36D)
Legacy B4 2014-2019 2
  • 2.5 Gas (FB25B)
  • 3.6 Gas (EZ36D)

What is the role of Subaru Legacy 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 Subaru Legacy 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 Subaru Legacy 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 Subaru Legacy 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.

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6 générations couvertes

Génération Période Motorisations Carburant
Legacy 1989-1993 1989-1993 2.2i 16V Gas (EJ22E) Gas
Legacy 1994-1998 1994-1998 2.2i 16V Gas (EJ22E), 2.2i 16V Gas (EJ22E), 2.5i 16V Gas (EJ25D) Gas
Legacy 1998-2003 1998-2003 2.2 Gas (EJ22E), 2.5 16V Gas (EJ251), 2.5 16V Gas (EJ253) Gas
Legacy 2004-2010 2004-2010 2.5i Gas (EJ253), 2.5i Gas (EJ259) Gas
Legacy 2008-2015 2008-2015 2.5 SOHC Gas (EJ253), 3.6 Gas (EZ36D) Gas
Legacy B4 2014-2019 2014-2019 2.5 Gas (FB25B), 3.6 Gas (EZ36D) Gas

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