ASE A8 TEST PREP TASK LIST
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B. Ignition System Diagnosis and Repair (8 questions)
1. Diagnose ignition system related problems such as no-starting, hard starting, engine misfire, poor
driveability, spark knock, power loss, poor mileage, and emissions problems; determine root cause;
determine needed repairs.
2. Interpret ignition system related diagnostic trouble codes (DTCs); determine needed repairs.
3. Inspect, test, repair, or replace ignition primary circuit wiring and components.
4. Inspect, test, service, repair or replace ignition system secondary circuit wiring and components.
5. Inspect, test, and replace ignition coil(s).
6. Inspect, test, and replace ignition system sensors; adjust as necessary.
7. Inspect, test, and/or replace ignition control module (ICM)/powertrain/engine control module
(PCM/ECM); reprogram as needed.
C. Fuel, Air Induction, and Exhaust System
Diagnosis and Repair (9 questions)
1. Diagnose fuel system related problems, including hot or cold no-starting, hard starting, poor
driveability, incorrect idle speed, poor idle, flooding, hesitation, surging, engine misfire, power loss,
stalling, poor mileage, and emissions problems; determine root cause; determine needed action.
2. Interpret fuel or induction system related diagnostic trouble codes (DTCs); analyze fuel trim and other
scan tool data; determine needed repairs.
3. Inspect fuel tank, filler neck, and gas cap; inspect and replace fuel lines, fittings, and hoses; check
fuel for contaminants and quality.
4. Inspect, test, and replace fuel pump(s) and/or fuel pump assembly; inspect, service, and replace fuel
filters.
5. Inspect and test electric fuel pump control circuits and components; determine needed repairs.
6. Inspect, test, and repair or replace fuel pressure regulation system and components of fuel injection
systems; perform fuel pressure/volume test.
7. Inspect, remove, service or replace throttle assembly; make related adjustments.
8. Inspect, test, clean, and replace fuel injectors and fuel rails.
9. Inspect, service, and repair or replace air filtration system components.
10. Inspect throttle assembly, air induction system, intake manifold and gaskets for air/vacuum leaks
and/or unmetered air.
11. Remove, clean, inspect, test, and repair or replace fuel system vacuum and electrical components
and connections.
12. Inspect, service, and replace exhaust manifold, exhaust pipes, oxygen sensors, mufflers, catalytic
converters, resonators, tailpipes, and heat shields.
13. Test for exhaust system restriction or leaks; determine needed action.
14. Inspect, test, clean and repair or replace turbocharger or supercharger and system components.
D. Emissions Control Systems Diagnosis and Repair
(Including OBD II) (8 questions)
1. Positive Crankcase Ventilation (1 question)
1. Test and diagnose emissions or driveability problems caused by positive crank case ventilation (PCV)
system.
2. Inspect, service, and replace positive crankcase ventilation (PCV) filter/breather cap, valve, tubes,
orifice/metering device, and hoses.
2. Exhaust Gas Recirculation (2 questions)
1. Test and diagnose driveability problems caused by the exhaust gas recirculation (EGR) system.
2. Interpret exhaust gas recirculation (EGR) related scan tool data and diagnostic troublecodes (DTCs);
determine needed repairs.
Summary of Contents for ASE-A8
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