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Engine Diagnosis, Removal And Disassembly?

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1. A device commonly used to measure engine oil pressure is a
A. thermistor.
B. prove-out circuit.
C. body control module.
D. piezoresistive sensor.

2. When testing a starter system problem, a technician notices
that, after first turning on the headlights, the lights go out
completely when the ignition switch is turned to the start
position. What is the most likely cause of the problem?
A. A defective starter motor
B. A starter solenoid that’s stuck in the closed position
C. A discharged battery
D. Loose or dirty battery terminals

3. Two technicians are discussing the capacity of a battery. Technician A says that during
a capacity test, a battery should provide at least 9.6 volts. Technician B says that a
good battery should produce current equal to approximately 5 times its ampere-hour
rating for 15 seconds. Which of the following statements is correct?
A. Only Technician A is correct.
B. Only Technician B is correct.
C. Both Technician A and Technician B are correct.
D. Neither Technician A nor Technician B is correct.

4. When taking an oil pressure test, a technician finds that the pressure is higher than
the manufacturer’s specifications. Which of the following is a possible cause?
A. A leak in the pickup tube                    C. A stuck pressure relief valve
B. Worn engine bearings                           D. Worn oil pump gears
 
5. Ferrous and nonferrous are the two basic classifications of
A. seals.                                    C. metals.
B. gaskets.                                 D. alloys.

6. Two technicians are discussing oil classifications. Technician A says using an S-class oil
is best used in diesel engines with compression ignition. Technician B says reduced
engine friction with synthetic oil may increase your gas mileage. Which technician is
correct?
A. Only Technician A is correct.
B. Only Technician B is correct.
C. Both technicians are correct.
D. Neither technician is correct.

7. The radiator, recovery system, and thermostat are all parts of the engine _____
system.
A. lubrication
 C. cooling
B. oil displacement
D. ignition

8. The addition of nearly 25 percent chromium to improve the overall quality of steel
results in
A. gray cast.
C. carbon steel.
B. stainless steel.
D. nodular steel.

9. A silicone coated gasket with a solid steel core and a rubber fiber facing, able to seal
coolant and oil at temperatures up to 2000ºF, is a _____ gasket.
A. valve cover
B. cylinder head
C. oil pan
D. intake manifold

10. Two technicians are discussing the cooling system casting plugs. Technician A says that
disc-type plugs are installed with the convex side facing out. Technician B says that
cup-type plugs are installed with the convex side facing out. Which of the following
statements is correct?
A. Only Technician A is correct.
B. Only Technician B is correct.
C. Both Technician A and Technician B are correct.
D. Neither Technician A nor Technician B is correct.

11. As a general rule, the maximum gear clearances on a gear-type oil pump should be no
greater than
A. 0.001 inch. C. 0.005 inch.
B. 0.003 inch. D. 0.007 inch.

12. Two technicians are discussing the engine’s lubrication system. Technician A says a
warm engine with 10 psi of oil pressure per 1,000 rpms of engine speed is okay.
Technician B says that any oil pressure between 10 and 80 psi is okay, depending on
conditions. Which techinician is correct?
A. Only Technician A is correct. C. Both technicians are correct.
B. Only Technician B is correct. D. Neither technician is correct.

13. _____ is quite toxic, and can be fatal to humans in fairly small quantities.
A. Ethylene glycol coolant C. Engine water
B. Propylene glycol coolant D. Grain alcohol coolant

14. Head gaskets and exhaust manifold gaskets are both types of _____ gaskets.
A. soft                          C. silicone
B. hard                         D. anaerobic

15. Two technicians are discussing engine sealants. Technician A says most current manufacturers
use molded gaskets in their engines. Technician B says aerobic sealants work
with both plastic and metal. Which technician is correct?
A. Only Technician A is correct. C. Both technicians are correct.
B. Only Technician B is correct. D. Neither technician is correct.

16. Two technicians are discussing the diagnosis of an oil leak problem. Technician A says
that an oil leak will always be located at the exact spot where a drip is observed.
Technician B says that a special chemical dye and a black light can be used to detect
an oil leak. Which of the following statements is correct?
A. Only Technician A is correct.
B. Only Technician B is correct.
C. Both Technician A and Technician B are correct.
D. Neither Technician A nor Technician B is correct.

17. To avoid using high-voltage wiring, some electronic ignition systems make use of
_____ systems.
A. emission control C. prove-out circuit
B. multi-
asked Mar 30, 2012 by carbonfiber (405 points)