a) Identify and interpret engine performance concern; determine necessary action
b) Research applicable vehicle and service information, such as engine management system operation, vehicle service history, service precautions and technical service bulletins.
c) Diagnose abnormal engine noise or vibration concerns; determine necessary action.
d) Perform engine absolute (vacuum/boost) manifold pressure tests; determine necessary action.
e) Diagnose engine mechanical, electrical, electronic, fuel, and ignition concerns with an oscilloscope and/or engine diagnostic equipment; determine necessary action.
f) Prepare 4 or 5 gas analyzer; inspect and prepare vehicle for test, and obtain exhaust readings; interpret readings, and determine necessary action.
g) Retrieve and record stored OBD I diagnostic trouble codes; clear codes.
h) Retrieve and record stored OBD II diagnostic trouble codes; clear codes.
i) Diagnose emissions or drivability concerns resulting from malfunctions in the computerized engine control system with no stored diagnostic trouble codes; determine necessary action.
j) Check for module communication errors using a scan tool
k) Inspect and test computerized engine control system sensors, power train control module (PCM), actuators, and circuits using a graphing multimeter (GMM)/digital storage oscilloscope (DSO); perform necessary action.
l) Diagnose ignition system related problems such as no-starting, hard starting, engine misfire, poor drivability, spark knock, power loss, poor mileage, and emissions concerns on vehicles with electronic ignition (distributor less) systems; determine necessary action.
m) Diagnose ignition system related problems such as no-starting, hard starting, engine misfire, poor drivability, sparks knock, power loss, poor mileage, and emissions concerns on vehicles with distributor ignition (DI) systems; determine necessary action.
n) Inspect and test ignition coil(s); perform necessary action
o) Diagnose hot or cold no-starting, hard starting, poor drivability, incorrect idle speed, poor idle, flooding, hesitation, surging, engine misfire, power loss, and stalling, poor mileage, dieseling, and emissions problems on vehicles with carburetor-type fuel systems; determine necessary action.
p) Inspect throttle body, air induction system, intake manifold and gaskets for vacuum leaks and/or unmetered air.