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A1 ASE Test Questions with Explanations of Answers
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A1 ASE Test Questions with Explanations of Answers
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A1 ASE TestIf 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 - 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 - 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 - 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 - B only
The cause of excessive valve stem height could be:
, `An improperly installed valve guide
`excessive material machined from the head surface
`a worn valve guide and stem
`excessive material removed from the valve seat - excessive material removed
from the valve seat
While diagnosing an engines timing belt condition, Technician A says that some
vehicle manufacturers recommend checking timing belt wear by measuring the
installed length of the belt tensioner. Technician B says that on some engines the
valves will strike the top of the pistons if the timing belt jump breaks. Who is
correct?
A only
B only
Both A and B
Neither A nor B - Both A and B
While discussing engine sealants, Technician A says that RTV sealer dries in the
absence of air. Technician B says that anaerobic sealer dries in the absence of air.
Who is correct?
A only
B only
Both A and B
Neither A nor B - B only
While measuring cylinder taper and out-of-round, Technician A says that the
cylinder diameter should be measured at two vertical locations. Technician B
says that cylinder our-of-round is the difference between the cylinder diameter in
the thrust and axial directions. Who is correct?
A only
B only
Both A and B
Neither A nor B - B only
Technician A says that when checking connecting rods, they should be measured
to determine if they are bent. Technician B says that each connecting rod should
be measured for a twisted condition. Who is correct?
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