1.   A vacuum gauge is connected to the intake manifold of an engine. The needle fluctuates between (15 and 20 in Hg) at idle. This reading indicates:

A A Normal Condition.

B Late Ignition or Valve Timing.

C A Stuck Valve or Misfire.

D A Clogged Exhaust.

6.   Technician A says valve spring installed height is measured from the base of the valve spring retainer to the pocket in the cylinder head. Technician B says the valves margin will not effect its operating temperature. Who is correct?

A Technician A

B Technician B

C Both A and B

D Neither Technician A or B

2.   A cast iron engine block is cracked. Technician A says welding is an accepted method of repairing this engine block. Technician B says metal pinning is an accepted method of cracked engine block repair.
Who is correct?

A Technician A

B Technician B

C Both A and B

D Neither Technician A or B

7.   A technician installs a radiator pressure tester on the radiator of a cold engine. After starting the engine the pressure quickly rises to 18 psi. Technician A says this is a normal condition. Technician B says the engine may have a leaking cylinder head gasket. Who is correct?

A Technician A

B Technician B

C Both A and B

D Neither Technician A or B

3.   The least likely to cause low oil pressure in an engine is:

A Oil Pressure Valve.

B Crankshaft Bearings.

C Camshaft Bearings.

D Worn Valve Guides.

8.   Two Technicians are discussing the PCV system on an engine. Technician A says a stuck closed PCV valve could cause engine oil seals to leak. Technician B says that the PCV system allows the blow-by gases from the crankcase to flow into the intake manifold for re-combustion. Who is correct?

A Technician A

B Technician B

C Both A and B

D Neither Technician A or B

4.   Technician A says that torque to yield bolts can not be used twice. Technician B says that torque to yield bolts can be reused as long as they are cleaned and re-torqued. Who is correct?

A Technician A

B Technician B

C Both A and B

D Neither Technician A or B

9.   Technician A says that magnetic particle detection is an acceptable method to detect cracks in aluminum castings. Technician B says a special dye is used to detect cracks in aluminum castings.
Who is correct?

A Technician A

B Technician B

C Both A and B

D Neither Technician A or B

5.   The best tool for checking crankshaft end-play is a:

A Bore gauge

B Digital micrometer

C Dial indicator

D None of the above

10.   A vehicle has white smoke coming from its tailpipe. The cause of this problem is most likely:

A Worn Piston Rings.

B Blown Head Gasket

C Worn Valve Seals

D Leaking Fuel Injector