Yes. Because the fuel/air mix is directly injected, it does not enter the combustion chamber via the inlet valves and does not clean them. As a result, carbon can accumulate on the inlet valves.

How does direct fuel injection work? Instead of having injectors in a throttle body, or in the intake manifold, a direct injection system makes use of an injector that fires into the combustion ...

What are the thoughts on this forum, regarding the reliability of modern GDI engines. I understand that there used to be a whole lot of reliability concerns around ...

The Korean manufacturer Kia has announced that it has developed a new gasoline direct injection (GDI) engine. The new power unit is a largish (2.4 litre) four-cylinder engine which produces about 200 ...

Port fuel injection (PFI) was a major milestone in the early '80s. The integration of PFI rapidly changed the way fuel was delivered by increasing fuel economy and improving engine performance. Even ...

Search the web for 'direct fuel injection history' and two prominent results will often materialise: Leon Levavasseur and the Mercedes-Benz 300 SL. Their prevalence is understandable. Levavasseur is ...