Answer :
Final answer:
a) Technician A is correct. Worn rocker arms can upset valve clearance, which can affect engine performance.
Explanation:
The rocker arms are responsible for transmitting the motion of the camshaft to open and close the valves. If the rocker arms are worn, they may not properly adjust the clearance between the rocker arm and the valve, leading to issues with the valve timing and overall engine performance.
For example, if the rocker arms are worn and there is too much clearance, the valves may not open fully or at the right time, resulting in reduced power output and poor fuel efficiency. On the other hand, if there is not enough clearance due to worn rocker arms, the valves may not fully close, leading to compression leaks and a loss of power. In either case, worn rocker arms can have a significant impact on engine performance.
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