| A-1 Engine Repair Certification Practice Test Answers |
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| 16.
Answer A is wrong. Both technicians are correct. Answer B is wrong. Both technicians are correct. Answer C is correct. The valve can strike the piston when out of timing in an interference engine. Answer D is wrong. Both technicians are correct. Return Learn more about interference engines. |
| 17.
Answer A is wrong. A flex fan decreases its pitch at higher engine speeds. Answer B is correct. A viscous fan clutch contains a silicon based fluid. Answer C is wrong. Technician B is correct. Answer D is wrong. Technician B is correct. Return Learn more about cooling fans. |
| 18.
Answer A is wrong. Technician B is correct. Answer B is correct. The ECT effects both engine timing and fuel mixture. Answer C is wrong. Technician B is correct. Answer D is wrong. Technician B is correct. Return |
| 19.
Answer A is wrong. Answer B is wrong. Answer C is wrong. Answer D is correct. Air is leaking from the cylinder, past the gasket, and into the coolant jacket. Return |
| 20.
Answer A is wrong. Answer B is wrong. Answer C is correct. This is a least likely type question. A rich not lean condition can damage a catalytic converter. Answer D is wrong. Return |