Lesson 3
PRACTICE EXERCISE
1.
What is indicated if the engine oil level is too high and the oil has a milky appearance?
a.
Oil of the wrong viscosity
b.
Fuel leaking into the oil
c.
Water leaking into the oil
2.
An engine knock that goes away when the proper spark plug lead is disconnected is most likely caused
by a loose
a.
rod bearing.
b.
main bearing.
c.
throwout bearing.
3.
Which parts have too much operating clearance if the engine knocks and the oil pressure is low?
a.
Piston pins
b.
Valve guides
c.
4.
Loose main bearings in the engine will make the MOST noise when the engine is
a.
hot.
b.
cold.
c.
under load.
5.
What should be done first if an engine overheats?
a.
Check the operation of the thermostat
b.
Check the airflow through the radiator cores
c.
Flush the radiator
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