| ASE A1 Engine Repair Certification Practice Test Answers |
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Answer A is wrong. A stuck open thermostat will cause a vehicle to take too long to reach operating temperature. May also cause unwanted hot spots. Answer B is correct. Electrolysis causes corrosion of dissimilar metals in a cooling system. The weaker metal of the two (aluminum) will corrode. It's amazing, if you haven't heard of it read the "Learn more about guy..." Answer C is wrong. A loose radiator cap will cause an engine to overheat. Answer D is wrong. A faulty head gasket will result in gases and compression leaking from the compression chamber. Return Learn more about automotive electrolysis, and the coolant system. |
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Answer A is wrong. It should take time for the pressure to build. Answer B is correct. A leaking head gasket will force combustion into the coolant system causing an increase in system pressure. Answer C is wrong. Technician B is correct. Answer D is wrong. Technician B is correct. Return Learn more about cooling systems diagnosis. |
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Answer A is correct. Excessive pressure builds in the PCV system causing high oil pressure to bypass the engine seals. Answer B is wrong. Both technicians are correct. Answer C is . A wrong PCV valve will cause pressure to build in the crankcase forcing oil past engine seals. The PCV system is a one-way system that allows blow-by gases from the crankcase to flow into the intake manifold for re combustion. Answer D is wrong. Both technicians are correct. Return Learn more about the engines PCV system. |
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Answer A is correct. It is common to adjust the valves when tuning or after replacing the cylinder head. Also inspect cylinder valve overlap, lift, and duration. Answer B is wrong. Make sure all head bolts are lightly oiled and torqued in their proper sequence and torque first. Answer C is wrong. Technician A is correct. Always make sure the valve lash is correct. Answer D is wrong. Technician A is correct. Adjust and check valves and springs when the a cylinder head has been installed. Return Learn more about valve adjustments and their components. |
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Answer A is wrong. Worn piston rings would burn oil producing blue/gray smoke. Answer B is correct. A leaking head gasket would cause coolant to leak from the jacket to the cylinder producing white/gray smoke. Answer C is wrong. Valve seals would burn oil especially at start up producing blue/gray smoke. Answer D is wrong. A leaking fuel injector would create a rich condition producing black smoke. Return Learn more about smoke color and diagnosis. |
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