Clogging of the injectors leads to a poor quality of fuel atomization, resulting in an irregular flow to the engine. This problem is particularly pronounced in GDI engines since, unlike PFI systems, in this configuration the injectors are placed directly in the combustion chamber. Working in high temperature conditions, in close contact with the burnt gases, they are therefore more subject to the accumulation of carbon residues which compromise their regular functioning. Deposits can also cause valves to stick, thus altering the correct fuel/air ratio and therefore combustion efficiency. When the fuel system becomes dirty, not only does the engine performance decrease in terms of driveability and response, but there is also increased consumption and particulate emissions. Top Gasoline REPO