Which component directs fuel to the nozzles?

• A. Barrel Valve
• B. Metering Valve
• C. Shut-off Valve
• D. Fuel Pressure

Answer: (B)

The key idea is that injector fuel delivery is controlled by the metering valve. This valve precisely regulates how much fuel can pass into the injector lines and ultimately to the nozzles, adjusting to engine demand. When more fuel is needed, the metering valve opens wider to send more fuel to the nozzles; when less is needed, it narrows the flow, maintaining the correct air–fuel mix and timing. The other components don’t direct the fuel to the nozzles in the same way: a shut-off valve stops flow, fuel pressure is a condition of the system rather than a directing component, and a barrel valve isn’t responsible for metering fuel to the nozzles in this context.