A-1 Engine Repair
Practice Test Answers
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
17.

Answer A is correct. Coolant leaks past the seal and contaminates the bearing.

Answer B is wrong. Always check to see if the fan clutch has left or right handed threads before
attempting removal.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is correct.

Return
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.

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