ASE 8: ENGINE PERFORMANCE

General
MAST8002 Research vehicle service information such as fluid type, vehicle service history, service precautions, technical service bulletins, and recalls including vehicles equipped with advanced driver assistance systems (ADAS).
MAST8012 Retrieve and record DTCs, OBD monitor status, and freeze frame data; clear codes and data when directed.
MAST8010 Verify proper engine cooling system operation
MAST8011 Verify correct camshaft timing, including engines equipped with variable valve timing (VVT) systems; determine needed action.
MAST8001 Identify and interpret engine performance concerns
MAST8003 Diagnose abnormal engine noises or vibration concerns
MAST8004 Diagnose the cause of excessive oil consumption, coolant consumption, unusual exhaust color, odor, and sound; determine needed action.
MAST8005 Perform engine manifold pressure tests (vacuum/boost)
MAST8006 Perform cylinder power balance test
MAST8007 Perform cylinder cranking and running compression tests
MAST8008 Perform cylinder leakage test
MAST8009 Diagnose engine mechanical, electrical, electronic, fuel, and ignition concerns; determine needed action.
Computerized Controls
MAST8044 Identify computerized control system components and configurations.
MAST8013 Access and use service information to perform step-by-step (troubleshooting) diagnosis.
MAST8014 Perform active tests of actuators using a scan tool
MAST8015 Describe the use of OBD monitors for repair verification.
MAST8018 Inspect and test computerized engine control system sensors, powertrain/engine control module (PCM/ECM), actuators, and circuits using a graphing multimeter (GMM), digital storage oscilloscope (DSO), and/or scan tool; determine needed action.
MAST8045 Describe the process for reprogramming or recalibrating the powertrain/engine control module (PCM/ECM).
MAST8016 Diagnose the causes of emissions or driveability concerns with stored or active diagnostic trouble codes (DTCs); obtain, graph, and interpret scan-tool data.
MAST8017 Diagnose emissions or driveability concerns without stored or active diagnostic trouble codes
MAST8019 Diagnose driveability and emissions problems resulting from malfunctions of interrelated systems (cruise control, security alarms, suspension controls, traction controls, HVAC, automatic transmissions, non-OEM installed accessories, or similar systems); determine needed action.
Ignition System
MAST8046 Identify ignition system components and configurations.
MAST8023 Remove and replace spark plugs
MAST8020 Diagnose ignition system related problems such as no-starting, hard starting, engine misfire, poor driveability, spark knock, power loss, poor mileage, and emissions concerns; determine needed action.
MAST8021 Inspect and test crankshaft and camshaft position sensor(s)
MAST8022 Inspect, test, and/or replace ignition control module and/or powertrain/engine control module; reprogram/initialize as needed.
Fuel, Air Induction, and Exhaust Systems
MAST8047 Identify fuel, air induction, and exhaust system components and configurations.
MAST8027 Replace fuel filter(s) where applicable.
MAST8028 Inspect, service, or replace air filters, filter housings, and intake duct work.
MAST8032 Inspect integrity of the exhaust manifold, exhaust pipes, muffler(s), catalytic converter(s), resonator(s), tail pipe(s), and heat shields; determine needed action.
MAST8033 Inspect condition of exhaust system hangers, brackets, clamps, and heat shields; determine needed action.
MAST8035 Check and refill diesel exhaust fluid (DEF).
MAST8025 Check fuel for quality, composition, and contamination; determine needed action.
MAST8026 Inspect and test fuel pump(s) and pump control system for pressure, regulation, and volume; determine needed action.
MAST8029 Inspect throttle body, air induction system, intake manifold, and gaskets for vacuum leaks and/or unmetered air.
MAST8030 Inspect, test, and/or replace fuel injectors on low- and high-pressure systems.
MAST8031 Verify proper idle speed
MAST8034 Perform exhaust system back-pressure test
MAST8024 Diagnose hot or cold no-starting, hard starting, poor driveability, incorrect idle speed, poor idle, flooding, hesitation, surging, engine misfire, power loss, stalling, poor mileage, dieseling, and emissions problems; determine needed action.
MAST8036 Test the operation of turbocharger/supercharger systems
Emissions Control Systems
MAST8048 Identify emission control system components and configurations.
MAST8038 Inspect, test, service, and/or replace positive crankcase ventilation (PCV) filter/breather, valve, tubes, orifices, and hoses; determine needed action.
MAST8037 Diagnose oil leaks, emissions, and driveability concerns caused by the positive crankcase ventilation (PCV) system; determine needed action.
MAST8039 Diagnose emissions and driveability concerns caused by the exhaust gas recirculation (EGR) system; inspect, test, service and/or replace electrical/electronic sensors, controls, wiring, tubing, exhaust passages, vacuum/pressure controls, filters, and hoses of exhaust gas recirculation (EGR) systems; determine needed action.
MAST8040 Inspect and test electrical/electronically operated components and circuits of secondary air injection systems
MAST8042 Diagnose emission and driveability concerns caused by catalytic converter system
MAST8041 Diagnose emissions and driveability concerns caused by the evaporative emissions control (EVAP) system
MAST8043 Interpret diagnostic trouble codes (DTCs) and scan tool data related to the emissions control systems
Tasksheets Included From Other ASE Foundation Standards
MAST1009 Identify service precautions related to service of the internal combustion engine of a hybrid electric vehicle.