Which of the following describes the function of manifolds?

• A. They are only for induction
• B. They are only for exhaust
• C. They carry the fuel-air mixture from the carburetor to the cylinders and carry exhaust gases away to the main outlet
• D. They are used for lubrication

Answer: (C)

Manifolds are the routing paths for gases in an engine. The intake manifold carries the fuel–air mixture from the carburetor to each cylinder, while the exhaust manifold collects the exhaust gases from the cylinders and directs them toward the exhaust outlet. The statement that describes both functions—delivering the mixture to the cylinders and carrying exhaust away to the main outlet—best captures what manifolds do. Other options wrongly limit manifolds to induction only, exhaust only, or tie them to lubrication, which isn’t their role.