Posts Tagged: GDI engine repair

How a High Pressure Fuel Pump Works in GDI Engines

Why Oil Changes Protect Your High Pressure Fuel Pump Quick Summary Gasoline direct injection engines rely on a high pressure fuel pump to generate the extreme fuel pressure needed to inject fuel directly into the combustion chamber. Understanding how a high pressure fuel pump works is critical because it is mechanically driven by the camshaft and depends on clean engine oil for survival. Neglecting oil changes can accelerate camshaft wear, damage the pump’s internal piston, reduce fuel pressure, cause misfires, and eventually lead to expensive repairs. In a GDI engine, … Read More