Quiz: What is the role of a vacuum advance in the ignition system July 6, 2025 by Alex Turner What is the role of a vacuum advance in the ignition system of an engine? Discover more about Vehicle Engine and Automobile at our home page. A) To adjust the ignition timing based on engine load and speed B) To increase fuel pressure in the fuel system C) To enhance the cooling of the engine components D) To control the exhaust emissions from the engine Submit Answer