ASE T1 GASOLINE ENGINES
A high spike on an oscilloscope can indicate what?
A. A closed gap on a spark plug
B. An disconnected or open spark plug wire
C. A short in the spark plug wire - answerB. An disconnected or open spark plug wire
A low spike line on an oscilloscope can indicate what?
A. A closed gap on a spark plug
B. An disconnected or open spark plug wire
C. A short in the spark plug wire - answerA. A closed gap on a spark plug
Excessive crank case pressure can cause oil leaks?
True
False - answerTrue
Excessive crank case pressure can be caused by worn ___ or excessive cylinder wall
or liner clearances.
A. Piston head
B. Rings
C. Seals - answerB. Rings
Bluish-grey or white grey smoke from the exhaust can indicate what?
A. Coolant in engine
B. Fuel not burning
C. Oil consumption - answerC. Oil consumption
When loss of pressure during a coolant pressure test, with no evidence of external leak,
what could be the cause?
A. Cracked cylinder head
B. Cracked engine block
C. Blown head gasket
D. Cylinder liner seal leak - answerAll of the above
Coolant leak into a cylinder can cause what color exhaust smoke?
A. White
B. Bluish_grey
C. Black - answerA. White
Combustion gasses escaping into the cooling system will cause what to appear in the
radiator while the engine is running?
A. Discoloration
B. Coolant level to decrease
A high spike on an oscilloscope can indicate what?
A. A closed gap on a spark plug
B. An disconnected or open spark plug wire
C. A short in the spark plug wire - answerB. An disconnected or open spark plug wire
A low spike line on an oscilloscope can indicate what?
A. A closed gap on a spark plug
B. An disconnected or open spark plug wire
C. A short in the spark plug wire - answerA. A closed gap on a spark plug
Excessive crank case pressure can cause oil leaks?
True
False - answerTrue
Excessive crank case pressure can be caused by worn ___ or excessive cylinder wall
or liner clearances.
A. Piston head
B. Rings
C. Seals - answerB. Rings
Bluish-grey or white grey smoke from the exhaust can indicate what?
A. Coolant in engine
B. Fuel not burning
C. Oil consumption - answerC. Oil consumption
When loss of pressure during a coolant pressure test, with no evidence of external leak,
what could be the cause?
A. Cracked cylinder head
B. Cracked engine block
C. Blown head gasket
D. Cylinder liner seal leak - answerAll of the above
Coolant leak into a cylinder can cause what color exhaust smoke?
A. White
B. Bluish_grey
C. Black - answerA. White
Combustion gasses escaping into the cooling system will cause what to appear in the
radiator while the engine is running?
A. Discoloration
B. Coolant level to decrease
