2026-10-08 · 5 min read
Nissan Serena Carbon Buildup Malaysia — GDI
Serena MR20DD uses direct injection — intake valve carbon expected at 60,000–80,000 km. Symptoms: rough cold idle, hesitation, mild power loss. Walnut blast or chemical clean at 80,000 km. RON97 and periodic intake cleaner reduce buildup rate.
Serena MR20DD uses direct injection — intake valve carbon expected at 60,000–80,000 km. Symptoms: rough cold idle, hesitation, mild power loss. Walnut blast or chemical clean at 80,000 km. RON97 and periodic intake cleaner reduce buildup rate.