Excess fuel returns to the tank via the __________.

• A. Metering Valve
• B. Fuel Filter
• C. Bypass Valve
• D. Main Bypass

Answer: (C)

Excess fuel is managed by the fuel pressure regulator and its bypass path. When the fuel rail pressure reaches the set value, the regulator opens a bypass path that lets the surplus fuel flow back to the tank. This keeps the rail pressure stable despite varying engine demands. The metering valve controls how much fuel is sent to the injectors, the fuel filter only filters out particles, and “main bypass” isn’t the usual term for the return path. So the return flow goes through the bypass valve.