ASE Certification Engine Repair (A1) Practice Test
Build your confidence for ASE Certification Engine Repair (A1). Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.
Try a sample questionExam overview and details
Official ASE A1 Engine Repair certification exam prep. Covers engine diagnosis, cylinder head and valve train, engine block assembly, lubrication and cooling systems, and fuel induction. Administered by ASE as a linear (computer-based) format exam. Key domains include General Engine Diagnosis, Fuel, Electrical, Ignition, Air Induction and Exhaust Systems Diagnosis and Service, Lubrication and Cooling Systems Diagnosis and Repair and Cylinder Head and Valve Train Diagnosis and Repair.
Sample Questions
Choose an answer and explore the explanation to see how practice works.
A 2018 minivan with a 3.5L V6 with 82,400 miles is brought in for a misfire after an overheated engine was repaired. The repair order also notes that the MIL has not always stayed on. During diagnosis, a valve face has a margin below minimum specification and a tuliped shape under magnification. What is the proper repair?
A 2015 coupe with a 2.0L engine with 85,200 miles is brought in for a VVT performance DTC and sluggish acceleration. The repair order also notes that the complaint is worse after an overnight soak. During diagnosis, oil level and viscosity are correct, the cam actuator command changes, but actual cam angle responds slowly and the solenoid screen has debris. What should be inspected or serviced first?
A 2016 hatchback with a 1.8L chain-drive engine with 77,400 miles is brought in for black smoke and a fuel smell. The repair order also notes that the MIL has not always stayed on. During diagnosis, fuel pressure is above specification and does not drop when vacuum is applied to the regulator. What is the most likely repair?
A 2020 pickup with a 5.3L V8 with 87,500 miles is brought in for a rebuilt engine that has no oil pressure after first start. The repair order also notes that an aftermarket radio is installed. During diagnosis, the gauge and sender are verified, oil level is correct, and the pump was installed dry without priming. What is the best immediate action?
A 2021 crossover with a turbocharged 2.0L engine with 82,000 miles is brought in for oil consumption after an overhaul. The repair order also notes that the customer recently changed brands of fuel. During diagnosis, the cylinder measures 0.0035 in. taper and 0.0030 in. out-of-round where the service limit is 0.0020 in.. Which machining decision is correct?
Career Opportunities & Salary
Exam insights and study advice
Engine mechanical failure is one of the most complex and costly repairs a vehicle can undergo. Mastery of this domain directly impacts customer trust, shop profitability, and vehicle longevity. A technician certified in Engine Repair can accurately diagnose subtle noises, performance losses, and oil consumption issues, preventing unnecessary part replacement and ensuring repairs are completed correctly the first time. This expertise reduces comebacks, builds a reputation for quality work, and is fundamental to advancing in the automotive repair industry.
Recommended
These are the backgrounds the certifying body suggests. Check the vendor's own page for anything it formally requires.
What this exam covers
Use the published domain weights to plan your study. Practice results do not predict your certification exam score.