Q: I have a 2009 VW with gasoline direct inject and a 2.0-liter turbo engine. It recently needed the intake valves cleaned (a very costly job) after just 54,000 miles. I understand many manufacture… ...

It involves modifying the engine to spray a small amount of fuel directly onto the valves to help keep them clean. It’s important to note that not all cars with direct injection experience long ...

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 ...

Gasoline direct injection (DI) engines have been lurking in the shadows of gasoline-burning, internal combustion engine development for decades but are now becoming mainstream.

Q: I own a 2019 Subaru Forester. It has a direct injection engine. DI appears almost unavoidable now. I am very happy with my new Forester but am wondering whether there is anything I can do to ...

When coupled with variable valve timing or direct injection of fuel (more on this a little later) and the use of advanced materials, the result is a 1.4 L turbo engine in a midsize car that makes ...