Toyota Innova Glow Plug Guide — Diesel Cold Start

Glow plugs on the 1GD-FTV last 80,000–100,000 km. In Malaysia's tropical climate, cold starts are less stressful than in colder countries — but glow plug failure still causes rough cold starts, white smoke on startup, and occasional misfires in heavy rain or early mornings. The 1GD-FTV has 4 glow plugs. Diagnosis: OBD scan for glow plug fault codes (P0671–P0674). Replacement cost: 4 plugs RM 200–400 parts + labour.

Toyota diesel models use glow plugs for cold-start ignition. In Malaysia's warm climate, glow plugs rarely fail early — but they're critical for morning cold starts after the engine has sat overnight. Signs of a faulty glow plug: hard starting, excessive white smoke on cold start, rough idle until warm. Glow plug lifespan: 80,000–100,000 km. Always replace all glow plugs at the same time (4 plugs). Budget RM 50–100 per plug (NGK or Denso OEM). A glow plug control module fault can cause the same symptoms — have the system tested before replacing plugs.