Master Service Technician Practice Test

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Why is conducting a compression test significant in vehicle maintenance?

It checks oil levels

It measures pressure in each cylinder

Conducting a compression test is significant in vehicle maintenance because it measures the pressure in each cylinder of the engine. This test is crucial for assessing the health of the engine by determining how well each cylinder is sealing. Low compression readings can indicate several potential issues, such as worn piston rings, damaged valves, or a blown head gasket, all of which can lead to reduced engine performance and efficiency. By evaluating the compression across cylinders, technicians can diagnose engine problems more accurately and take the necessary steps to rectify them, ensuring the vehicle runs smoothly and efficiently.

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It inspects tire quality

It evaluates the cooling system

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