ASE A1 - PRACTICE TEST (SECTION B)
EXAM 2025 QUESTIONS AND ANSWERS
12. measurement B in the figure is more than specified. Tech A says this problem may bottom
the lifter plunger. Tech B says a shim should be installed under the valve spring.
A
B
Both
Neither - ANS B only
Measure the installed valve spring height from the lower edge of the top retainer to the spring
seat.
Tech A is wrong. Excessive installed valve spring height will not cause the lifter plunger to
bottom. Excessive installed valve spring height reduces valve spring tension, which may result in
valve float and cylinder misfiring at higher speeds.
Tech B is correct because is the measurement is excessive, install shims between the bottom of
the valve spring and the top of the spring seat surface on the cylinder head.
13. Tech A says that stuck valves may cause bent pushrods. Tech B says that improper valve
timing may cause bent pushrods
A
B
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,Both
Neither - ANS Both
-Stuck valves may cause bent pushrods. Improper valve timing may also cause bent pushrods.
17. when measuring valve stem-to-guide clearance, Tech A says the valve stems and guides
should be measure at 3 vertical locations. Tech B says the valve guide diameter should be
measured with either a hole or snap gauge
A
B
Both
Neither - ANS Both
-When measuring valve stem-to-guide clearance, stem diameter and guide diameter should be
measured at three vertical locations (-near the top of the guide -the middle of the guide -the
bottom of the guide)
Either a hole or a snap gauge can be used to measure the guide diameter
29. Tech A says worn valve stem seals may cause rapid valve stem and guide wear. Tech B says
worn valve stem seals may cause excessive oil consumption
A
B
Both
Neither - ANS B only
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, -worn valve stem seals generally do not cause stem or guide wear, but may cause excessive oil
consumption
30. While measuring valve springs, Tech A says the valve spring must be rotated while
measuring squareness. Tech B says that spring squareness can be checked by rolling the spring
on a surface plate
A
B
Both
Neither - ANS A only
-Valve springs must be rotated while measuring squareness. Squareness is not checked by
rolling the spring on a surface plate
31. Tech A says worn valve lock grooves may cause the valve locks to fly out of place with the
engine running, resulting in severe engine damage. Tech B says worn valve lock grooves may
cause a clicking noise with the engine idling
A
B
Both
Neither - ANS A only.
worn valve lock grooves may cause the valve locks to fly out of place with the engine running,
resulting in severe engine damage, but will not cause a clicking noise.
32. While adjusting mechanical valve lifters, Tech A says when the valve clearance is checked on
a cylinder, the piston in that cylinder should at TDC on the exhaust stroke. Tech B says some
COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 3
EXAM 2025 QUESTIONS AND ANSWERS
12. measurement B in the figure is more than specified. Tech A says this problem may bottom
the lifter plunger. Tech B says a shim should be installed under the valve spring.
A
B
Both
Neither - ANS B only
Measure the installed valve spring height from the lower edge of the top retainer to the spring
seat.
Tech A is wrong. Excessive installed valve spring height will not cause the lifter plunger to
bottom. Excessive installed valve spring height reduces valve spring tension, which may result in
valve float and cylinder misfiring at higher speeds.
Tech B is correct because is the measurement is excessive, install shims between the bottom of
the valve spring and the top of the spring seat surface on the cylinder head.
13. Tech A says that stuck valves may cause bent pushrods. Tech B says that improper valve
timing may cause bent pushrods
A
B
COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 1
,Both
Neither - ANS Both
-Stuck valves may cause bent pushrods. Improper valve timing may also cause bent pushrods.
17. when measuring valve stem-to-guide clearance, Tech A says the valve stems and guides
should be measure at 3 vertical locations. Tech B says the valve guide diameter should be
measured with either a hole or snap gauge
A
B
Both
Neither - ANS Both
-When measuring valve stem-to-guide clearance, stem diameter and guide diameter should be
measured at three vertical locations (-near the top of the guide -the middle of the guide -the
bottom of the guide)
Either a hole or a snap gauge can be used to measure the guide diameter
29. Tech A says worn valve stem seals may cause rapid valve stem and guide wear. Tech B says
worn valve stem seals may cause excessive oil consumption
A
B
Both
Neither - ANS B only
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, -worn valve stem seals generally do not cause stem or guide wear, but may cause excessive oil
consumption
30. While measuring valve springs, Tech A says the valve spring must be rotated while
measuring squareness. Tech B says that spring squareness can be checked by rolling the spring
on a surface plate
A
B
Both
Neither - ANS A only
-Valve springs must be rotated while measuring squareness. Squareness is not checked by
rolling the spring on a surface plate
31. Tech A says worn valve lock grooves may cause the valve locks to fly out of place with the
engine running, resulting in severe engine damage. Tech B says worn valve lock grooves may
cause a clicking noise with the engine idling
A
B
Both
Neither - ANS A only.
worn valve lock grooves may cause the valve locks to fly out of place with the engine running,
resulting in severe engine damage, but will not cause a clicking noise.
32. While adjusting mechanical valve lifters, Tech A says when the valve clearance is checked on
a cylinder, the piston in that cylinder should at TDC on the exhaust stroke. Tech B says some
COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 3
