Question 24Motor Plants - 1st Asst/Chief
70% to passIn the illustrated engine, the main camshaft controls the timing of which of the following components? Illustration MO-0003
Aexhaust valves
Bfuel pumps
CIntake valves
Dall of the above
AI Explanation
The correct answer is B) fuel pumps. The main camshaft in the illustrated engine controls the timing of the fuel pumps. The camshaft is responsible for opening and closing the fuel pumps at the proper times to deliver fuel to the engine cylinders. The camshaft does not directly control the opening and closing of the exhaust valves (option A) or intake valves (option C), as those are typically controlled by separate camshafts or rockers. Option D is incorrect because the main camshaft does not control all of those components, only the fuel pumps.
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