What is the purpose of the fuel-priming system?

• A. Increases fuel capacity
• B. Filters contaminated fuel
• C. Helps start the engine by delivering fuel to the engine's intake
• D. Regulates fuel temperature

Answer: (C)

The fuel-priming system is meant to get the engine started by delivering a small amount of fuel directly into the engine’s intake so the air–fuel mixture is rich enough to ignite reliably during cranking. This is especially helpful when starting from cold or when the normal fuel metering isn’t providing enough vaporized fuel right away. It bypasses the normal metering just for starting, flooding the intake briefly to ensure ignition can occur.

It’s not about increasing fuel capacity, it doesn’t function as a filter, and it doesn’t regulate fuel temperature. Those tasks are handled by other parts of the fuel system.