No matter what injection system your car has, it's subject to carbon buildup over time. Here are some ways to prevent and clean carbon buildup in your engine.

We explain why all gasoline engines, especially direct-injected engines, benefit from routine intake manifold, valve, and injector cleaning.

Walnut blasting a good—if expensive, as the intake manifold has to come off—way to maintain engine performance for the life of a direct-injection car.

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 ...