2013 natef task area a-8 engine performance 7-2013 a. general engine diagnosis & testing b....
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2013 NATEF Task Area A-8 Engine Performance7-2013
• 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 PerformanceA. 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 PerformanceA. General Engine Diagnosis & Testing
Identify & interpret engine performance concern; determine necessary action.A8.A.1
Engine Testing Results Specifications Notes
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 PerformanceA. 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 PerformanceA. 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 PerformanceA. General Engine Diagnosis & Testing
Inspect engine assembly for fuel, oil, coolant, and other leaks; determine necessary action.
“Oldie”
NATEF Task Area A-8 Engine PerformanceA. 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 PerformanceA. 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 PerformanceA. 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 PerformanceA. General Engine Diagnosis & Testing
Perform cylinder power balance test; determine necessary action.A8.A.6
http://automotiverepairsoftware.org/automotive-cylinder-power-balance-test.html
P-2
NATEF Task Area A-8 Engine PerformanceA. 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 PerformanceA. General Engine Diagnosis & Testing
Perform engine running compression test; determine necessary action.“Oldie”
NATEF Task Area A-8 Engine PerformanceA. General Engine Diagnosis & Testing
Perform cylinder leakage test; determine necessary action.A8.A.8
P-1
NATEF Task Area A-8 Engine PerformanceA. 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 PerformanceA. 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 PerformanceA. General Engine Diagnosis & Testing
Verify engine operating temperature; determine necessary action.A8.A.10
P-1
NATEF Task Area A-8 Engine PerformanceA. 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 PerformanceA. General Engine Diagnosis & Testing
Verify correct camshaft timing.A8.A.11
P-1
NATEF Task Area A-8 Engine PerformanceB. 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 PerformanceB. 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 PerformanceB. 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 PerformanceB. 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 PerformanceB. 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 PerformanceB. 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 PerformanceB. 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 PerformanceB. 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
http://www.picoauto.com/automotive-library.html
NATEF Task Area A-8 Engine PerformanceB. Computerized Engine Controls Diagnosis & Repair
Obtain and interpret scan tool data.“Oldie”
NATEF Task Area A-8 Engine PerformanceB. 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 PerformanceC. 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 PerformanceC. 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 PerformanceC. 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 PerformanceC. 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 PerformanceC. 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 PerformanceC. Ignition System Diagnosis & Repair
Inspect, test, and service distributor.“Oldie”
NATEF Task Area A-8 Engine PerformanceC. 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 PerformanceC. Ignition System Diagnosis & Repair
Inspect and test ignition system secondary circuit wiring and components; perform necessary action.
“Oldie”
NATEF Task Area A-8 Engine PerformanceC. Ignition System Diagnosis & Repair
Inspect and test ignition coil (s); perform necessary action.“Oldie”
NATEF Task Area A-8 Engine PerformanceC. Ignition System Diagnosis & Repair
Check and adjust ignition system timing and timing advance/retard (where applicable).
“Oldie”
NATEF Task Area A-8 Engine PerformanceC. 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 PerformanceD. 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 PerformanceD. 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 PerformanceD. 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 PerformanceD. Fuel, Air Induction Exhaust System Diagnosis & Testing
Remove & replace fuel filter(s).A8.D.4
P-1
NATEF Task Area A-8 Engine PerformanceD. 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 PerformanceD. 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 PerformanceD. 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 PerformanceD. Fuel, Air Induction Exhaust System Diagnosis & Testing
Inspect and test fuel injectors.A8.D.7
P-2
NATEF Task Area A-8 Engine PerformanceD. Fuel, Air Induction Exhaust System Diagnosis & Testing
Verify idle control operation.A8.D.8
P-1
NATEF Task Area A-8 Engine PerformanceD. 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 PerformanceD. 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 PerformanceD. 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 PerformanceD. 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 PerformanceD. 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 PerformanceE. 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 PerformanceE. 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 PerformanceE. 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 PerformanceE. 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 PerformanceE. 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 PerformanceE. 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 PerformanceE. 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 PerformanceE. 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 PerformanceE. 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 PerformanceE. Emission Control Systems Diagnosis & Repair
Inspect and test catalytic converter efficiency.A8.E.9
P-2
NATEF Task Area A-8 Engine PerformanceE. 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 PerformanceE. 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 PerformanceF. Related Engine Service
Adjust valves on engines with mechanical or hydraulic lifters.“Oldie”
NATEF Task Area A-8 Engine PerformanceF. Related Engine Service
Remove and replace timing belt; verify correct camshaft timing.“Oldie”
NATEF Task Area A-8 Engine PerformanceF. Related Engine Service
Remove and replace thermostat and gasket.“Oldie”
NATEF Task Area A-8 Engine PerformanceF. 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 PerformanceF. 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 PerformanceF. Related Engine Service
Perform oil and filter change.“Oldie”
NATEF Task Area A-8 Engine PerformanceF. Related Engine Service
Demonstrate proficiency in using oxy-acetylene torch to heat and cut metal.“Oldie”
NATEF Task Area A-8 Engine PerformanceF. Related Engine Service
Identify hybrid vehicle internal combustion engine service precautions.“Oldie”
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