A1 ASE Test Questions And Answers Latest Update All Correct Review Solution

A1 ASE Test Questions And Answers Latest Update All Correct Review Solution

A1 ASE Test Questions And Answers Latest Update All Correct Review Solution
If an engine experiences a sharp, metallic rapping noise only when it is idling, the trouble could be worn:
`Main bearings
`Piston pins
`connecting rod bearings
`piston skirts - ANS-✔✔Piston pins
On a port fuel-injected engine, the cause of excessive black smoke in the exhaust could be:
`low fuel pressure
`an intake manifold vacuum leak
`high oxygen sensor voltage
`high fuel pressure - ANS-✔✔High fuel pressure
During a cylinder power balance test on a four-cylinder port fuel-injected engine, one cylinder has a 75-
rpm drop and the other cylinders have a 125-rpm drop. Technician A says that the cylinder with a 75-
rpm drop may have a burned exhaust valve. Technician B says that the cylinder with the 75-rpm drop
may have a bad fuel injector. Who is correct?
A only
B only
Both A and B
Neither A nor B - ANS-✔✔Both A and B
While discussing cylinder head service, Technician A says that torque-to-yield bolts may be reused if
they are not damaged. Technician B says that torque-to-yield bolts are usually tightened to a specific
torque and then rotated a certain number of degrees. Who is correct?
A only
B only
Both A and B
Neither A nor B - ANS-✔✔B only