Auto Engine Repair (SOS Michigan Test
Prep Valve Train) questions and answers
What is enclosed in the vehicle vin? - correct answer ✅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 answer ✅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 answer ✅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 answer ✅Both
,Auto Engine Repair (SOS Michigan Test
Prep Valve Train) questions and answers
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 answer ✅Tech A
What is the most likely cause of low fuel pressure in a fuel injection engine?
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
answer ✅Both
, Auto Engine Repair (SOS Michigan Test
Prep Valve Train) questions and answers
The most likely cause of a bent push rod? - correct answer ✅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 answer
✅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 answer ✅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 answer ✅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.
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