Four Seasons AC Repair

Test Quiz

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1. Modern AC systems have _______ oil in them than systems from 20 years ago.
- Less
- More
- The same
2. Refrigerant leaks can cause compressor failure due to lack of lubrication.
- True
- False
3. After the oil is added to the compressor, and the compressor is mounted to the vehicle, the compressor must be rotated ______ times prior to starting the vehicle.
- 2
- 5
- 8
- 10
4. Refrigerant is heavier than air so the technician should check with an electronic leak detector on the underside of suspected connections or components.
- True
- False
5. Excessive dye in an AC system will enhance the lubrication properties of the oil.
- True
- False
6. Reduced airflow across the AC Condenser will:
- Increase high side and reduce low side pressures
- Have no effect on pressures
- Reduce pressures
- Increase pressures
7. The following chemicals can falsely trigger an electronic leak detector:
- Windshield washer fluid
- Brake fluid
- Transmission fluid
- All of the above
8. Missing air dams, body lifts, custom bumpers and grills, or missing fan shrouds will
- Reduce under hood temperatures
- Decrease airflow across the condenser
- Improve cooling times
- Increase fuel economy
9. Electronic leak detectors should have the certification of SAE J2791 and/or J2913.
- True
- False
10. Too much oil in a compressor can cause as much or more damage than too little oil in a compressor.
- True
- False

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