Fredericksburg Auto Repair 1325 Reviews 4.9

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DIRECT INJECTION PROBLEMS

In recent years, auto manufacturers have been introducing gasoline direct injection (GDI) systems paired with turbo-charging, which enables them to downsize engines and increase fuel economy without sacrificing performance. While most fuel-injected engines use indirect fuel injection that premixes the fuel and air in the intake manifold, direct injection also has air flowing into the cylinder from the intake manifold, but the fuel is sprayed into the cylinder separately. As beneficial as GDI systems are, they are showing drivability issues related to carbon buildup on the intake valves, which results in hard starting and random misfire codes. This is caused by fuel’s failure to spray on the backside of the valves, where the detergents can work to remove deposit buildup. Get the maximum reliability and safety from the car you rely on daily by inspecting parts routinely and replacing them before they fail. We will treat you like a friend and your car like it was one of our own. One of our ASE Certified Technicians can inspect the various components of the vehicle, including the valves, belts and hoses, brake fluid, pads, and shoes.

HINT: The above-mentioned deposit buildup associated with gasoline direct injection systems can be corrected with a thorough cleaning of the intake manifold and intake valves.