ASE A1 Engine Repair Practice Tests: 3 Practice Tests and 165 Questions
ASE A1
165
General Engine Diagnosis | Verifying concerns, noises and vibrations, leaks, smoke, vacuum, power balance, compression, leakage and PCV tests, scan tool and DMM diagnosis (40%)
Cylinder Head and Valve Train Diagnosis and Repair | Head inspection and resurfacing, valves, seats, guides, springs, seals, lash, lifters, cam drives and valve timing (13%)
Engine Block Diagnosis and Repair | Block and cylinder inspection, honing, crankshaft, bearings, clearances, pistons, rings and core plugs (9%)
Lubrication and Cooling Systems Diagnosis and Repair | Oil pressure, pumps, oil and filters, coolers, thermostats, water pumps, radiators, fans, coolant and drive belts (18%)
Fuel, Electrical, Ignition, Air Induction, and Exhaust Systems Diagnosis and Service | Fuel delivery, throttle and air induction, boost, charging and grounds, ignition, oxygen sensors and catalytic converters (20%)
General Engine Diagnosis
Cranking compression is normal on all cylinders, but a running compression test shows one cylinder much lower than the others. Which of these is the most likely cause?
Worn piston rings
A blown head gasket
A worn camshaft lobe on that cylinder
A cracked piston
C
Running compression shows how well a cylinder breathes. Normal cranking compression proves the cylinder seals, so low running compression points to a cylinder that is not filling, such as a worn cam lobe or a valve that does not open fully. Worn rings, a head gasket leak or a cracked piston would also lower cranking compression.
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Course Content
Supporting Resources
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ASE A1 Engine Repair Certification Exam Prep – Practice Test #1
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ASE A1 Engine Repair Certification Exam Prep – Practice Test #2
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Exam Mode: ASE A1 Engine Repair Certification Exam Prep – Practice Test #3
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