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Exam (elaborations)

Postal Exam 943/944/945 Study Guide USPS EXAM

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Postal Exam 943/944/945 Study Guide USPS EXAM

Institution
Automotive Technician 943/944/945
Module
Automotive Technician 943/944/945

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Postal Exam 943/944/945 Study Guide USPS
EXAM 2025-2026
1. HC hydrocarbons

2. Hc is caused by Misfire

3. Nox High exhaust temps caused by high combustion temp

4. Egr open Lean

5. Egr closed Rich

6. Rich Black smoke

7. Lean White smoke

8. Secondary spring Goes on first

9. lower ball joint Load bearing

10. Vacuum range 14-22 "

11. Cam to crank Crank turns 2 times per 1 cam rotation

12. What is used for piston pin di- Micrometer
ameter

13. Amp Electrical current

14. Ohm unit of resistance

15. Volt Unit of electric pressure

16. What tool measures amps Ammeter

17. What tool measures ohms Ohmmeter

18. What tool measures Volts Voltmeter
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Automotive Technician 943/944/945
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Automotive Technician 943/944/945

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  • postal exam
  • postal exam
  • postal exam 943
  • postal exam 944
  • postal exam 945
  • postal exam study guide usps exam
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