[andy669]

Originally posted by PKRWUD:
This one’s much easier than bigwhitecobra’s quizes. Enjoy.

It is? I might have 2 right if I'm lucky! Good one Chris.

1. An EFI system is unable to change the pulse widths of the injectors, which of these could cause the problem?

a. A defective fuel pressure regulator.
b. A bad oxygen sensor.
c. A weak fuel pump.
d. A defective ECM.

My answer is D

2. An EFI engine has an irregular idle speed when cold:

Tech A says that the problem could be caused by a bad oxygen sensor.
Tech B says that the problem may be a faulty Idle Air Control (IAC) system.
Who is right?

a. Tech A only.
b. Tech B only.
c. Both A and B.
d. Neither A nor B.

My answer is B

3. A car equipped with a smog pump system backfires during deceleration, which of these could be the cause of the problem?

a. Defective diverter valve.
b. Defective air pump.
c. Leaking air manifold.
d. Defective air pump check valve.

My answer is C

4. A vehicle hesitates when the throttle is opened quickly, which of these is a possible cause of the problem?

a. Retarded ignition timing.
b. Low fuel pump pressure.
c. Cracked distributor cap.
d. Engine is overheating.

My answer is B

5. While inspecting a set of spark plugs, you find one plug that has a badly burned electrode, what is the most likely cause of the problem?

a. An open spark plug wire.
b. Worn piston rings.
c. Ignition cross firing.
d. Worn camshaft.

My answer is D

6. Which of these will NOT cause a tapping noise while the engine is running?

a. A loose exhaust manifold.
b. Valves that are out of adjustment.
c. Poor lubrication.
d. A burnt exhaust valve.

My answer is D

7. When replacing piston rings:

a. Use a ball hone to remove deep scratches from the bore.
b. Use a finish hone to remove deep scratches from the bore.
c. use a ball hone to deglaze the bore.
d. use a coarse hone to deglaze the bore.

My answer is C

8. All of these will cause low compression readings, EXCEPT:

a. Valve problems.
b. Piston ring problems.
c. A slightly slipped timing belt.
d. Worn cylinder walls.

My answer is C

9. Which of these is a true statement about oil pressure?

a. The pressure will be high if the oil clearances are greater than normal.
b. The pressure will be high if the pressure regulator is defective.
c. The pressure will be low if there are blockages in the oil passages.
d. The pressure will be low if high viscosity oil is used in the engine.

My answer is D

10. All of these could be the cause for one power door lock not working, EXCEPT:

a. Binding lock linkage.
b. A defective circuit breaker.
c. A defective door switch.
d. A defective motor or solenoid.


My answer is B

Take care,
-Chris