ASE L1 - Advanced Engine Performance Specialist Technician Practice Questions

A technician notices a vehicle has a rough idle and poor acceleration. Which parameter should be checked to diagnose the issue?

• AA. Fuel pressure
• BB. Mass Air Flow sensor
• CC. Oxygen sensor
• DD. Spark plugs

After performing a compression test, the readings are low across all cylinders. What should be the technician's first step?

• AA. Inspect the timing belt
• BB. Check the fuel system
• CC. Verify the test method
• DD. Replace the spark plugs

The technician connects a scan tool and finds multiple cylinder misfire codes. What is the first step in diagnosing this issue?

• AA. Replace spark plugs
• BB. Check for vacuum leaks
• CC. Test ignition coils
• DD. Inspect fuel injectors

While diagnosing a no-start condition, the technician finds no spark at the spark plugs. What should be checked next?

• AA. Ignition switch
• BB. Battery voltage
• CC. Fuel pressure
• DD. Crankshaft position sensor