2026-10-08 · 5 min read
Mitsubishi ASX Spark Plug Replacement Malaysia
The Mitsubishi ASX 4B10 engine uses four iridium spark plugs (NGK ILKAR7L11 or equivalent). Iridium plugs are rated for 60,000 km intervals. Worn spark plugs cause rough idling, misfires, reduced fuel economy, and hesitation under acceleration. As a port fuel injection engine, the ASX does not suffer severe injector-deposit fouling on plugs compared to GDI engines, but regular inspection is still recommended. Use only the correct heat range plug to avoid pre-ignition issues.
ASX Spark Plug Replacement
- 4A92 1.6L: use NGK iridium plugs — service interval 80,000–100,000 km
- Do not use standard copper plugs — iridium maintains correct electrode gap far longer
- Misfires, rough idle, or hard starting beyond 100,000 km usually indicate plug replacement needed