2026-10-08 · 5 min read
Mitsubishi ASX Carbon Buildup & Throttle Cleaning Malaysia
The Mitsubishi ASX 4B10 uses port fuel injection, meaning fuel is sprayed into the intake ports, which provides some self-cleaning of intake valves. However, throttle body carbon buildup still occurs over time, typically becoming noticeable around 60,000–80,000 km. Symptoms include rough idle, hesitation on light throttle, and reduced response. Throttle body cleaning at 60,000 km service intervals is recommended as preventive maintenance. This is a minor service that significantly improves driveability.
The Mitsubishi ASX 4B10 uses port fuel injection, meaning fuel is sprayed into the intake ports, which provides some self-cleaning of intake valves. However, throttle body carbon buildup still occurs over time, typically becoming noticeable around 60,000–80,000 km. Symptoms include rough idle, hesitation on light throttle, and reduced response. Throttle body cleaning at 60,000 km service intervals is recommended as preventive maintenance. This is a minor service that significantly improves driveability.