2025-01-15 · 5 min read
Proton X70 Carbon Cleaning Malaysia
X70 1.8T TGDI: direct injection — carbon builds on intake valves at 60,000–80,000 km. Walnut blast: RM 950–1,250. Most owners unaware. Symptoms: rough idle, misfires, hesitation.

X70 Carbon Cleaning — Needed at 60,000–80,000 km
The X70 1.8T TGDI is a turbocharged direct injection engine — fuel is sprayed directly into the cylinder, bypassing the intake valves. This means nothing cleans the valves on each cycle. Carbon deposits build up over time, restricting airflow and causing rough idle, hesitation, and power loss. Walnut blasting (media blasting through the intake) is the gold standard fix. Cost at 4M Car Care: RM 950–1,250.
