2026-10-08 · 5 min read
Nissan Serena Throttle Body Cleaning Malaysia
Serena MR20DD direct injection: throttle body carbon at 60,000–80,000 km. Symptoms: rough idle, light-throttle hesitation. Spray clean or full removal. Always do idle relearn after cleaning. Direct injection + stop-start means faster buildup than a conventional port-injected engine.
Serena Throttle Body Cleaning
- Clean every 40,000 km — city MPV driving causes carbon deposits on electronic throttle
- C27 drive-by-wire: reset ECU adaptation after cleaning — idle vehicle for 10 minutes
- Rough idle especially on cold start = likely throttle carbon after 60,000 km
- Combined with fuel injector cleaner treatment for best idle improvement result