The other day I dropped my car off at a European specialist shop, and while I was there, a technician was working in the engine bay of a Mk7 Golf R, cleaning out carbon deposits off the intake valves.

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 ...

Modern engines are cleaner and more efficient than the ones you grew up with, yet many drivers are discovering a new headache ...

Over time and miles, your car might start to slow down. It might not accelerate as quickly as it once did; the engine may not ...

Fuel injector cleaner serves an important function in vehicle maintenance. Most vehicles sold today have fuel injectors. Those injectors work by delivering precise amounts of gasoline or diesel fuel ...

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 ...

We may receive a commission on purchases made from links. Our cars depend on many individual mechanical parts and systems, as well as a host of electrical sensors and computers to carry us to and from ...

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 ...

Every new car sold in the United States today uses fuel injection, but not all fuel injection systems are the same. Some cars use port injection, while others use direct injection. Some even use both.