AG Mechanics CDE Practice Exam

The function of a push rod in an engine is to transfer motion from the camshaft to the rocker arms. This transfer of motion is essential in controlling the opening and closing of the engine's valves. Option B, regulating fuel injection, is usually done by the fuel injection system rather than the push rod. Option C, opening and closing the throttle, is typically controlled by the throttle linkage and not the push rod. Option D, pumping oil through the engine, is the function of the oil pump and not the push rod.