2026-10-08 · 5 min read
Nissan Latio Carbon Cleaning Malaysia — HR15DE
The HR15DE uses port injection, so carbon buildup on intake valves is minimal compared to direct-injection engines. The main carbon concern on the Latio is throttle body deposits at 20,000 km, causing rough idle and hesitation. Throttle body cleaning is the recommended intervention. Fuel injector deposits can also form — use a quality fuel injector cleaner treatment in the tank every 30,000 km, or professional ultrasonic cleaning at 20,000 km.
Latio Carbon Buildup Prevention
- Use fuel system cleaner (Liqui-Moly or Chevron Techron) every 20,000 km
- PCV valve check at 60,000 km — clogged PCV recirculates oil vapour that deposits carbon
- Clean throttle body every 40,000 km — carbon restricts airflow
- Monthly highway run: 30 minutes at 100+ km/h burns off soft deposits