Toyota Corolla Altis Carbon Cleaning Malaysia

All Altis generations use port injection — carbon buildup on intake valves is less severe than DI engines but still occurs above 80,000 km. Throttle body cleaning is the most common carbon service at our workshop.

• Throttle body cleaning — first step for rough idle or hunting idle
• Intake manifold decarbonisation — on high-mileage E140 units with rough idle that throttle cleaning didn't fix