FAA Powerplant Written Practice Test

What is the best practice during the installation of a new fuel system component?

1. Immediately start the engine to test

2. Ensure all connections are secure and check for leaks afterward

3. Leave the component untested

4. Skip the initial warm-up of the engine

The correct answer is: Ensure all connections are secure and check for leaks afterward

During the installation of a new fuel system component, ensuring that all connections are secure and checking for leaks afterward is critical for several reasons. First and foremost, fuel systems operate under pressure and any loose connections can lead to leaks, which not only compromise the system's efficiency but also pose significant safety hazards, including fire risks. After installation, it's important to meticulously inspect all fittings, hoses, and connections to confirm they are tight and properly secured. Following this, conducting a leak check allows for the identification of any issues before the system is put into operation. This step is vital in ensuring that the component functions as intended and that the overall system integrity is maintained. While hastily starting the engine without these checks may seem expedient, it could lead to dangerous situations if a leak is present. Leaving the component untested or skipping any initial engine procedures can result in undetected issues that could affect operation or safety. Proper installation and verification processes are fundamental to maintaining reliability and safety in fuel system operations.