![]() Using scan tool data to evaluate the health of the pumps and injectors. ![]() Pressure testing for the high- and low-sides of the fuel system.Measuring pulse-width signals with scopes, meters and scan tools.Electric fuel pump voltage drop testing.In a 45-minute webinar, the experts from Carter Engineered Fuel Pumps will train you on how to diagnose the entire fuel system of a GDI vehicle. If either pump can’t generate the pressure or volume commanded by the engine management system, it will cause driveability issues. These two pumps work in unison, so the correct quantity of fuel is injected directly into the cylinder. You still have an electric pump in the tank, but a high-pressure fuel pump is on the engine. Modern gasoline direct injection (GDI) engines have two fuel pump opportunities.
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