ASE A1 Quiz: Engine Repair Practice Test Questions and Answers 2026 (21pages)

1. A wet compression test is being performed on a four cylinder engine. The number two cylinder is low and the compression reading stays the same after adding oil. Technician A says the engine needs piston rings. Technician B says the engine has a faulty valve. Who is correct? o A. Technician A o B. Technician B o C. Both Technician A and B o D. Neither Technician A or B Correct Answer B. Technician B Explanation Answer A is wrong. It would be the piston rings if the readings would have increased. Answer B is correct. If there is no change in the compression reading after adding oil to the cylinder, the cylinder has a faulty valve. Answer C is wrong. Technician B is correct. Answer D is wrong. Technician B is correct. Rate this question: • 2. An engine is making a kn