AG Mechanics CDE Practice Exam

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What is another name for a valve tappet?

  1. Cam lobe

  2. Pushrod

  3. Valve guide

  4. Valve lifter

The correct answer is: Cam lobe

Another name for a valve tappet is a cam lobe. A cam lobe is the part of the camshaft that comes into contact with the valve tappet, also known as a cam follower. The cam lobe moves the valve tappet up and down, opening and closing the valve to allow the intake of fuel and air and the exhaust of combustion gases. It is important to understand this terminology as it plays a crucial role in the operation of the engine's valvetrain system. Pushrod, valve guide, and valve lifter are all components related to the valvetrain system, but they serve different functions and are not alternate names for a valve tappet.

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