2013 NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing B. Computerized Engine Controls C. Ignition System Diagnosis & Repair D. Fuel, air Induction & Exhaust Systems E. Emission Control Systems F. Related Engine Service

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Complete work order to include customer information, vehicle identifying information, verify customer concern, related service history, cause, & correction. “Oldie”

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Identify & interpret engine performance concern; determine necessary action. A8.A.1 Engine Testing ResultsSpecificationsNotes Customer Complaint: Oil Pressure: Compression Test: Cylinder Leakage Test: Oscilloscope Test: Exhaust Emission Test: Scan Test: Visual Inspection: P-1

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Research applicable vehicle and service information, such as engine management system operation, vehicle service history, service precautions, and technical service bulletins. A8.A.2 P-1

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Locate and interpret vehicle and major component identification numbers (VIN, vehicle certification labels, calibration decals). “Oldie”

NATEF Task Area A-8 engine Performance A. General Engine Diagnosis & Testing Inspect engine assembly for fuel, oil, coolant, and other leaks; determine necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Diagnose abnormal engine noise or vibration concerns; determine necessary action. A8.A.3 P-3

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Diagnose the cause of excessive oil consumption, coolant consumption, unusual exhaust color, odor, and sound; determine necessary action. A8.A.4 P-2

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Perform engine absolute (vacuum/boost) manifold pressure tests; determine necessary action. A8.A.5 P-1

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Perform cylinder power balance test; determine necessary action. A8.A.6 P-2

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Perform cylinder cranking and running compression tests; determine necessary action. A8.A.7 P-1

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Perform engine running compression test; determine necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Perform cylinder leakage test; determine necessary action. A8.A.8 P-1

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Diagnose engine mechanical, electrical, electronic, fuel, and ignition concerns; determine necessary action. A8.A.9 P-2

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Prepare 4 or 5 gas analyzer; inspect and prepare vehicle for test, obtain exhaust readings, interpret readings and determine necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Verify engine operating temperature; determine necessary action. A8.A.10 P-1

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Perform cooling system pressure tests; check coolant condition; inspect and test radiator, pressure cap, coolant recovery tank, and hoses; perform necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance A. General Engine Diagnosis & Testing Verify correct camshaft timing. A8.A.11 P-1

NATEF Task Area A-8 Engine Performance B. Computerized Engine Controls Diagnosis & Repair Retrieve and record diagnostic trouble codes, OBD monitor status, and freeze frame data; clear codes when applicable. A8.B.1 P-1

NATEF Task Area A-8 Engine Performance B. Computerized Engine Controls Diagnosis & Repair Access and use service information to perform step-by-step (troubleshooting) diagnosis. A8.B.2 P-1

NATEF Task Area A-8 Engine Performance B. Computerized Engine Controls Diagnosis & Repair Perform active tests of actuators using a scan tool; determine necessary action. A8.B.3 P-2

NATEF Task Area A-8 Engine Performance B. Computerized Engine Controls Diagnosis & Repair Describe the importance of running all OBDII monitors for repair verification. A8.B.4 P-1

NATEF Task Area A-8 Engine Performance B. Computerized Engine Controls Diagnosis & Repair Diagnose the causes of emissions or driveability concerns with stored or active diagnostic trouble codes; obtain, graph, and interpret scan tool data. A8.B.5 P-1

NATEF Task Area A-8 Engine Performance B. Computerized Engine Controls Diagnosis & Repair Diagnose emissions or driveability concerns without stored diagnostic trouble codes; determine necessary action. A8.B.6 P-1

NATEF Task Area A-8 Engine Performance B. Computerized Engine Controls Diagnosis & Repair Check for module communication (including CAN/BUS systems) errors usng a scan tool. “Oldie”

NATEF Task Area A-8 Engine Performance B. Computerized Engine Controls Diagnosis & Repair Inspect and test computerized engine control system sensors, power train/engine control module (PCM/ECM), actuators, and circuits using a graphing multi-meter (GMM)/digital storage oscilloscope (DSO); perform necessary action. A8.B.7 P-2

NATEF Task Area A-8 Engine Performance B. Computerized Engine Controls Diagnosis & Repair Obtain and interpret scan tool data. “Oldie”

NATEF Task Area A-8 Engine Performance B. Computerized Engine Controls Diagnosis & Repair Diagnose driveability and emissions problems resulting from malfunctions of interrelated systems (cruise control, security alarms, suspension controls, traction controls, A/C, automatic transmissions, non-OEM installed accessories, or similar systems); determine necessary action. A8.B.8 P-3

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Diagnose (troubleshoot) ignition system related problems such as no-starting, hard starting, engine misfire, poor driveability, spark knock, power loss, poor mileage, and emissions concerns; determine necessary action. A8.C.1 P-2

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Inspect and test crankshaft and camshaft position sensor(s); perform necessary action. A8.C.2 P-1

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Diagnose ignition system related problems such as no-starting, hard starting, engine misfire, poor driveability, spark knock, power loss, poor mileage, and emissions concerns on vehicles with distributor ignition (DI) systems; determine necessary action. no-start, driveability, & emission concerns on vehicles w/ electronic ignition-determine action. “Oldie”

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Inspect, test, and/or replace ignition control module, powertrain/engine control module; reprogram as necessary. A8.C.3 P-3

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Inspect and test ignition primary circuit wiring and solid state components; perform necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Inspect, test, and service distributor. “Oldie”

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Remove and replace spark plugs; inspect secondary ignition components for wear and damage. A8.C.4 P-1

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Inspect and test ignition system secondary circuit wiring and components; perform necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Inspect and test ignition coil (s); perform necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Check and adjust ignition system timing and timing advance/retard (where applicable). “Oldie”

NATEF Task Area A-8 Engine Performance C. Ignition System Diagnosis & Repair Inspect and test ignition system pick-up sensor or triggering devices; perform necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Diagnose (troubleshoot) 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 necessary action. A8.D.1 P-2

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Check fuel for contaminants; determine necessary action. A8.D.2 P-2

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Inspect and test fuel pumps and pump control systems for pressure, regulation, and volume; perform necessary action. A8.D.3 P-1

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Remove & replace fuel filter(s). A8.D.4 P-1

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Inspect, service, or replace air filters, filter housings, and intake duct work. A8.D.5 P-1

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Inspect and test cold enrichment system and components; perform necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Inspect throttle body, air induction system, intake manifold and gaskets for vacuum leaks and/or unmetered air. A8.D.6 P-2

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Inspect and test fuel injectors. A8.D.7 P-2

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Verify idle control operation. A8.D.8 P-1

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Inspect integrity of the exhaust manifold, exhaust pipes, muffler(s), catalytic converter(s), resonator(s), tail pipe(s), and heat shields; perform necessary action. A8.D.9 P-1

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Inspect condition of exhaust system hangers, brackets, clamps, and heat shields; repair or replace as needed. A8.D.10 P-1

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Perform exhaust system back-pressure test; determine necessary action. A8.D.11 P-2

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Check and refill diesel exhaust fluid (DEF). A8.D.12 P-3

NATEF Task Area A-8 Engine Performance D. Fuel, Air Induction Exhaust System Diagnosis & Testing Test the operation of turbocharger/supercharger systems; determine necessary action. A8.D.13 P-3

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Diagnose oil leaks, emissions, and driveability concerns caused by the positive crankcase ventilation (PCV) system; determine necessary action. A8.E.1 P-3

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Inspect, test, and service positive crankcase ventilation (PCV) filter/breather cap, valve, tubes, orifices, and hoses; perform necessary action. A8.E.2 P-2

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Diagnose emissions and driveability concerns caused by the exhaust gas recirculation (EGR) system; determine necessary action. A8.E.3 P-3

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Diagnose emissions and driveability concerns caused by the secondary air injection and catalytic converter systems; determine necessary action. A8.E.4 P-2

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Diagnose emissions and driveability concerns caused by the evaporative emissions control system; determine necessary action. A8.E.5 P-2

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Inspect and test electrical/electronic sensors, controls, and wiring of exhaust gas recirculation (EGR) systems; perform necessary action. A8.E.6 P-2

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Inspect, test, service, and replace components of the EGR system including tubing, exhaust passages, vacuum/pressure controls, filters, and hoses; perform necessary action. A8.E.7 P-2

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Inspect and test mechanical components of secondary air injection systems; perform necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Inspect and test electrical/electronically-operated components and circuits of air injection systems; perform necessary action. A8.E.8 P-3

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Inspect and test catalytic converter efficiency. A8.E.9 P-2

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Inspect and test components and hoses of the evaporative emissions control system; perform necessary action. A8.E.10 P-1

NATEF Task Area A-8 Engine Performance E. Emission Control Systems Diagnosis & Repair Interpret diagnostic trouble codes (DTCs) and scan tool data related to the emissions control systems; determine necessary action. A8.E.11 P-3

NATEF Task Area A-8 Engine Performance F. Related Engine Service Adjust valves on engines with mechanical or hydraulic lifters. “Oldie”

NATEF Task Area A-8 Engine Performance F. Related Engine Service Remove and replace timing belt; verify correct camshaft timing. “Oldie”

NATEF Task Area A-8 Engine Performance F. Related Engine Service Remove and replace thermostat and gasket. “Oldie”

NATEF Task Area A-8 Engine Performance F. Related Engine Service Inspect and test mechanical/electrical fans, fan clutch, fan shroud/ducting, air dams, and fan control devices; perform necessary action. “Oldie”

NATEF Task Area A-8 Engine Performance F. Related Engine Service Perform common fastener and thread repairs to include: remove broken bolt, restore internal and external threads, and repair internal threads with thread insert. “Oldie”

NATEF Task Area A-8 Engine Performance F. Related Engine Service Perform oil and filter change. “Oldie”

NATEF Task Area A-8 Engine Performance F. Related Engine Service Demonstrate proficiency in using oxy-acetylene torch to heat and cut metal. “Oldie”

NATEF Task Area A-8 Engine Performance F. Related Engine Service Identify hybrid vehicle internal combustion engine service precautions. “Oldie”