ASE Engine Repair Practice Questions with Answers

Which of the following creates a flapping sound near the front of the engine? Timing belt tension too loose An engine noise sounds like a knock at the side of the engine that is louder when the engine is cold and goes away or is reduced when the engine reaches operating temperature? Piston slap All of the following are reasons why you must disable the fuel injection system and ignition system when conducting an engine compression test, EXCEPT: Prevents inaccurate readings A power balance test is being performed. Technician A says to note the engine RPM before and during the test for each cylinder. Technician B says to record the RPM drop for each cylinder. Who is right? Both A and B Which of the following are two forms of oil contamination? Sludge and dilution All of the following are true regarding oil dilution, EXCEPT: More frequent at normal operating temperature Which of the following should be the first step in diagnosing an underhood noise? Discussing noise with the vehicle owner Using a diagnostic strategy for engine repair, which of the following is generally the last step in that process? Verifying the repair A tight timing belt makes what type of noise? Whining sound What is the tool in the illustration above used for? Checking cylinder compression During a cylinder leakage test on an engine cylinder, the technician can hear air coming out the tail pipe. Technician A says this could be caused by a burnt exhaust valve. Technician B says this could indicate that the piston rings gaps were installed in line. Who is right? A only All of the following could cause a high oil pressure, EXCEPT: High oil temperature