A-1 Engine Repair Certification Practice Test Answers

21.

Answer A is wrong. Both technicians are correct. RTV (Room Temperature Vulcanizing) is an aerobic sealant meaning that it cures in the presence of air.

Answer B is wrong. Both technicians are correct. Keep RTV away from sensors.

Answer C is correct. Anaerobic sealers are usually used on smooth, machined components.

Answer D is wrong. Both technicians are correct.

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22.

Answer A is wrong. Technician B is correct.

Answer B is correct. The vertical measurement should not be larger than any of the others. All measurements should be equal. A feeler gauge is not used for inside diameter measurements.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.

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23.

Answer A is wrong.

Answer B is wrong.

Answer C is wrong.

Answer D is correct. When injecting oil increases the cylinders pressure the piston rings would be the culprit.

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24.

Answer A is wrong. Both technicians are correct.

Answer B is wrong. Both technicians are correct.

Answer C is correct. This is true it is a good idea to help avoid a mix up, but never mark the arm or beam as this can create a weak point and eventually engine failure. Mark the base by the cap.

Answer D is wrong. Both technicians are correct.

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25.

Answer A is wrong.

Answer B is correct. The blocks deck area as well as the cylinder head may allow compression to leak into the coolant jacket.

Answer C is wrong.

Answer D is wrong.

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