Gasoline direct injection, or GDI, is one of the most crucial bits of technology in the modern internal combustion engine. In engines equipped with GDI, highly pressurized gasoline is sprayed directly ...

Before the turn of the millennium, you wouldn't find many people complaining about carbon deposits on engine valves. However, all of that changed as gasoline direct injection (GDi) went mainstream in ...

Valvoline Inc., a supplier of premium branded lubricants and automotive services, has launched Valvoline All Engine Clean Intake Cleaner and Valvoline All Engine Clean Fuel Rail Cleaner. These ...

The basic difference between direct injection (DI) and the port-fuel injection (PFI) systems we've become familiar with since the mid-1980s is that PFI sprays fuel into the intake manifold (behind ...