USPS 943 EXAM(ACTUAL EXAM) WITH
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2026
4. During a cylinder leakage test, what is indicated
when air escapes through the radiator from two
adjacent cylinders?
A. worn cylinder walls
B. defective cylinder head gasket
C. leaking piston rings
D. worn exhaust valves
E. burnt intake valves - ANSWERS-B. defective cylinder
head gasket
5. Which of the following would cause a soft, spongy
brake pedal?
A. air in the hydraulic system
, B. bent caliper retainer
C. warped rotors
D. out of round drum
E. loose lug nut - ANSWERS-A. air in the hydraulic
system
6. A PCV valve is controlled by which of the following?
A. valve lifter
B. throttle cable
C. engine vacuum
D. rocker arm
E. exhaust pressure - ANSWERS-C. engine vacuum
7. What is wrong during a compression test, if a low
compression reading goes up after a small amount of
oil is squirted into a spark plug hole?
A. defective rocker arm
B. worn lifter
C. cracked cylinder head
D. worn piston rings
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2026
4. During a cylinder leakage test, what is indicated
when air escapes through the radiator from two
adjacent cylinders?
A. worn cylinder walls
B. defective cylinder head gasket
C. leaking piston rings
D. worn exhaust valves
E. burnt intake valves - ANSWERS-B. defective cylinder
head gasket
5. Which of the following would cause a soft, spongy
brake pedal?
A. air in the hydraulic system
, B. bent caliper retainer
C. warped rotors
D. out of round drum
E. loose lug nut - ANSWERS-A. air in the hydraulic
system
6. A PCV valve is controlled by which of the following?
A. valve lifter
B. throttle cable
C. engine vacuum
D. rocker arm
E. exhaust pressure - ANSWERS-C. engine vacuum
7. What is wrong during a compression test, if a low
compression reading goes up after a small amount of
oil is squirted into a spark plug hole?
A. defective rocker arm
B. worn lifter
C. cracked cylinder head
D. worn piston rings
