Auto Engine Repair (SOS Michigan |\ |\ |\ |\ |\
Valve Train) EXAM QUESTIONS AND |\ |\ |\ |\ |\
CORRECT DETAILED ANSWERS |\ |\ |\
What is enclosed in the vehicle vin? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Engine type, body style, and transmission type.
|\ |\ |\ |\ |\ |\
A compression test shows that one cylinder shows to much
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
leakage. During the air test could be heard coming from the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
tailpipe what could be the cause?
|\ |\ |\ |\ |\
A) bad piston rings
|\ |\ |\
B) bad head gasket
|\ |\ |\
C) bad exhaust gasket
|\ |\ |\
D) exhaust valve not seating - CORRECT ANSWERS ✔✔D.)
|\ |\ |\ |\ |\ |\ |\ |\ |\
exhaust valve not seating |\ |\ |\
Technician A says that main bearing oil clearances can be
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
checked with plasty gages. |\ |\ |\ |\
Technician B says that main bearing oil clearances can be
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
checked with a feeler gauge. Who is Correct? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Tech A |\ |\
An engine is burning to much oil. Technician A says its the valve
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
guides. Technician B says its tapered cylinder walls. Who is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
correct? - CORRECT ANSWERS ✔✔Both
|\ |\ |\ |\
,A compression test is being done on an in- line four cylinder
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
engine. Cylinder two and three have readings of 10 psi cylinder
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
one has a reading of 140 psi and cylinder four has 145psi.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Technician A says its a blown head gasket |\ |\ |\ |\ |\ |\ |\ |\
Technician B says its bad valve timing. - CORRECT ANSWERS |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Tech A |\
What is the most likely cause of low fuel pressure in a fuel
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
injection engine? |\
A) clogged fuel filter
|\ |\ |\
B) clogged injector
|\ |\
C) restricted fuel line
|\ |\ |\ |\
D) stuck closed pressure regulator - CORRECT ANSWERS ✔✔A)
|\ |\ |\ |\ |\ |\ |\ |\ |\
clogged fuel filter |\ |\
The pressure and volume of a mechanical fuel pump are both
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
below spec. |\ |\
Technician A says that an air leak in the fuel line between the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
tank and the pump could be the cause.
|\ |\ |\ |\ |\ |\ |\ |\
Technician B says that a plugged fuel tank pick-up filter is the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cause. - CORRECT ANSWERS ✔✔Both|\ |\ |\ |\
The most likely cause of a bent push rod? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Excessive valve guide clearance |\ |\ |\
, Technician A says that it is important to drive the customers
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
vehicle to verify the complaint as part of your diagnosis
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
procedure. |\
Technician B says its a good idea to check for related TSB's -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Both |\ |\
Technician A says the main bearing clearances can be checked
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
with plasty gauges.
|\ |\
Technician B says that you can check main bearing clearances
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
with a feeler gauge. Who is correct? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Tech A |\
The oil filter on a customer's car is bulged out.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Technician A says this could be caused by an improper filter
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
installation. |\
Technician B says this can only be caused by a pressure regulator
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
that is stuck. Who is correct? - CORRECT ANSWERS ✔✔Tech B
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Technician A says that a turbocharger boost is controlled by a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
wastegate. |\
Technician B says the wastegate is controlled by the engine
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
vacuum.
Who is correct? - CORRECT ANSWERS ✔✔Both
|\ |\ |\ |\ |\ |\
NATEF certifies automotive:
|\ |\
A) dealerships
|\
B) independent garages
|\ |\
Valve Train) EXAM QUESTIONS AND |\ |\ |\ |\ |\
CORRECT DETAILED ANSWERS |\ |\ |\
What is enclosed in the vehicle vin? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Engine type, body style, and transmission type.
|\ |\ |\ |\ |\ |\
A compression test shows that one cylinder shows to much
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
leakage. During the air test could be heard coming from the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
tailpipe what could be the cause?
|\ |\ |\ |\ |\
A) bad piston rings
|\ |\ |\
B) bad head gasket
|\ |\ |\
C) bad exhaust gasket
|\ |\ |\
D) exhaust valve not seating - CORRECT ANSWERS ✔✔D.)
|\ |\ |\ |\ |\ |\ |\ |\ |\
exhaust valve not seating |\ |\ |\
Technician A says that main bearing oil clearances can be
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
checked with plasty gages. |\ |\ |\ |\
Technician B says that main bearing oil clearances can be
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
checked with a feeler gauge. Who is Correct? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Tech A |\ |\
An engine is burning to much oil. Technician A says its the valve
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
guides. Technician B says its tapered cylinder walls. Who is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
correct? - CORRECT ANSWERS ✔✔Both
|\ |\ |\ |\
,A compression test is being done on an in- line four cylinder
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
engine. Cylinder two and three have readings of 10 psi cylinder
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
one has a reading of 140 psi and cylinder four has 145psi.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Technician A says its a blown head gasket |\ |\ |\ |\ |\ |\ |\ |\
Technician B says its bad valve timing. - CORRECT ANSWERS |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Tech A |\
What is the most likely cause of low fuel pressure in a fuel
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
injection engine? |\
A) clogged fuel filter
|\ |\ |\
B) clogged injector
|\ |\
C) restricted fuel line
|\ |\ |\ |\
D) stuck closed pressure regulator - CORRECT ANSWERS ✔✔A)
|\ |\ |\ |\ |\ |\ |\ |\ |\
clogged fuel filter |\ |\
The pressure and volume of a mechanical fuel pump are both
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
below spec. |\ |\
Technician A says that an air leak in the fuel line between the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
tank and the pump could be the cause.
|\ |\ |\ |\ |\ |\ |\ |\
Technician B says that a plugged fuel tank pick-up filter is the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cause. - CORRECT ANSWERS ✔✔Both|\ |\ |\ |\
The most likely cause of a bent push rod? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Excessive valve guide clearance |\ |\ |\
, Technician A says that it is important to drive the customers
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
vehicle to verify the complaint as part of your diagnosis
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
procedure. |\
Technician B says its a good idea to check for related TSB's -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Both |\ |\
Technician A says the main bearing clearances can be checked
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
with plasty gauges.
|\ |\
Technician B says that you can check main bearing clearances
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
with a feeler gauge. Who is correct? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Tech A |\
The oil filter on a customer's car is bulged out.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Technician A says this could be caused by an improper filter
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
installation. |\
Technician B says this can only be caused by a pressure regulator
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
that is stuck. Who is correct? - CORRECT ANSWERS ✔✔Tech B
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Technician A says that a turbocharger boost is controlled by a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
wastegate. |\
Technician B says the wastegate is controlled by the engine
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
vacuum.
Who is correct? - CORRECT ANSWERS ✔✔Both
|\ |\ |\ |\ |\ |\
NATEF certifies automotive:
|\ |\
A) dealerships
|\
B) independent garages
|\ |\
