Introduction Direct injection carbon build-up is a common issue that many modern gasoline engines equipped with direct fuel injection systems face. Unlike traditional port fuel injection systems, where fuel is injected before the intake valve, direct injection systems spray fuel directly into the combustion chamber. While this technology offers benefits such as improved fuel efficiency and performance, it also poses challenges, one of which is carbon build-up. Why It Happens? 1. Unable to Clean Valve and Port: In traditional port fuel injection systems, fuel passes through the intake valve, which helps keep the valve and port clean from carbon deposits. However, in direct injection systems, fuel is injected directly into the combustion chamber, bypassing the intake valve. This lack of … Continue reading Direct Injection Carbon Build Up: Symptoms And Preventive Measures