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.   A vehicles cooling system is loosing coolant. The coolant passages and components have major corrosion throughout the system. Which of these are the most likely cause.

A Stuck open thermostat.

B Electrolysis.

C Loose radiator cap.

D Faulty head gasket.

2.   On an OHC engine one of the valve tips is .083" higher than the others. The most likely cause of this is:

A Weak spring tension.

B Valve spring installed height.

C Valve face.

D Loose head bolts.

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 oil filter on an engine is ballooned. What is the most likely cause of this condition:

A Stuck open oil pressure relief valve.

B Stuck closed oil pressure relief valve.

C Stuck open oil filter bypass valve.

D Contaminated oil.

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 functions to allow 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 always be reused. Technician B says that torque to yield bolts can be reused as long as they are cleaned and oiled before they are re-installed and torqued. Who is correct?

A Technician A

B Technician B

C Both A and B

D Neither Technician A or B

9.  An OHC engine has recently had the cylinder head replaced. The engine runs rough and stumbles. Technician A says this may be caused by the valve timing. Technician B says it is more likely the head gasket bolts are too loose. 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 heavy white smoke emitting from its tailpipe at all engine speeds. The cause of this problem is:

A Worn Piston Rings.

B A Leaking Head Gasket

C Worn Valve Seals

D A Leaking Fuel Injector