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[image]Technician A says that part X shown is used to rotate the valve spring. Technician B says that part X shown is used to correct installed spring height. Who is right? |
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A compression test shows that one cylinder is too low. A leakage test on that cylinder shows that there is too much leakage. During the test, air could be heard coming from the tail pipe. Which of these could be the cause?
A. Broken piston rings
B. A bad head gasket
C. A bad exhaust gasket
D. An exhaust valve not seating |
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| D. An exhaust valve not seating |
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| Technician A says that main bearing oil clearance can be checked with plastigage. Technician B says that main bearing oil clearance can be checked with a feeler gauge. Who is right? |
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| An engine is using too much oil. Technician A says that worn valve guides could be the cause. Technician B says that tapered cylinder walls could be the cause. Who is right? |
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| A compression test has been made on an in-line 4-cylinder engine. Cylinders 2 and 3 have readings of 10 psi. Cylinder 1 has a reading of 140 psi and cylinder 4 has a reading of 145 psi. Technician A says that these readings could be caused by a blown head gasket. Technician B says that these readings could be caused by wrong valve timing. Who is right? |
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[image]To determine piston-to-cylinder wall clearance, the diameter of the piston shown should be measured at:
A. W
B. X
C. Y
D. Z |
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Which of these would most likely cause a fuel-injected engine to have low fuel pressure?
A. A clogged fuel filter
B. A clogged fuel injector
C. A restricted fuel return line
D. A stuck-closed fuel pressure regulator |
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Technician A says that the setup shown can be used to check cylinder taper. Technician B says that the setup can be used to check cylinder out-of-round. Who is right?[image] |
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| The pressure and volume tests on a mechanical fuel pump are both below specs. Technician A says that an air lieak in the fuel line between the tank and pump could be the cause. Technician b says that a plugged fuel tank pick up filter could be the cause. Who is right? |
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The LEAST likely cause of a bent push rod is:
A. excessive engine rpm
B. a sticking valve
C. excessive valve guide clearance
D. a worn rocker arm stud |
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| C. Excessive valve guide clearance |
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