Pressed-in Valve Guide - One that uses a sleeve pressed into a hole machined in the cylinder head.

Valve Spring Tester - Device for measuring the tension or pressure exerted by the spring.

Parade Pattern - Oscilloscope pattern that shows traces for each cylinder from left to right across the screen.

Thermostat Rating - Temperature at which the thermostat opens.

Performance Test - A measurement of air conditioning system performance made with the vehicle engine running.

Lateral Run-Out - Side-to-side movement of a wheel or tire.

Compressor Shaft Seal - A common point of refrigerant leakage in a system.

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