Tune-Up Mechanic Job Description:

Tunes automotive vehicle engines to ensure efficient operation: Removes spark plugs, using socket wrench, and tests them, using spark-plug tester. Cleans electrodes in sandblasting machine, sets spark gap with feeler gauge, and replaces or installs new plugs. Inspects distributor breaker points for wear and pits, using feeler gauge, and replaces or resets points. Observes ignition timing, using timing light, and adjusts timing, using handtools. Adjusts carburetor needle setting, using handtools, and verifies adjustment, using instruments, such as fuel analyzer, vacuum gauge, oscilloscope, and tachometer. Sets valve tappets, using feeler gauge or dial indicator. Replaces defective coils, condensers, and electrical connection. Removes and cleans carburetor and fuel pump. Examines battery and connections and electrical charging and starting circuit. Adjusts, and repairs fan belt, and fuel and water pumps. May tune engine while vehicle runs on rollers connected to dynamometer and be designated Dynamometer Tuner (automotive ser.).