ASE A1 ENGINE REPAIR EXAM 2025 QUESTIONS AND ANSWERS

ASE A1 ENGINE REPAIR EXAM 2025
QUESTIONS AND ANSWERS



What is excessive cylinder leakage? - ANS 20% or greater is excessive



Air from tail pipe during leakage test - ANS Bad exhaust valve test



Heating a wrist pin will... - ANS It will expand and not fit into rod.



radiator tester - ANS



moderately loose alternator belt - ANS causes squealing while accelerating



manifold heat control valve - ANS forces hot exhaust gases up around the base of the
carburetor and intake manifold to warm the fuel-air mixture



oil cooler - ANS prevents excessive heat and oxidization of oil



intake manifold vacuum leak - ANS causes misfire at idle



Excessive valve spring height - ANS causes valve float



stuck valves or improper timing - ANS causes bent pushrods


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, Warped cylinder head surface - ANS causes valve seat distortion/ coolant & combustion
leaks



Heli-coil - ANS rethreaded bolt hole



Measures a valve guide diameter - ANS hole gauge or snap gauge



650-800 degrees - ANS temperature to clean iron and steel



Worn camshaft and crankshaft bearings - ANS cause low oil pressure



Bent connecting rod - ANS causes uneven connecting rod bearing wear



Lip type seals - ANS lip faces fluid



Increased compression during wet test - ANS signals worn rings



RTV - ANS used on oil pan, intake, and valve cover



Damaged radiator cap vacuum valve - ANS causes collapsed cooling system hose



Adding more antifreeze (80/20) - ANS raises boiling point



Defective water pump - ANS causes growling noise at idle



worn valve stem seals - ANS cause excessive oil consumption
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