Automotive Service Technician- Ch. 1
Canadian-Questions and Correct
Answers.
What level of eye protection is required when using an oxy-acetylene torch to cut mild steel? -
Answer Goggles with a #5 filter
A vehicle being raised on an electric two-post, double swing-arm hoist beings to riase unevenly
side to side. What is the most probable cause?
A. The car is too heavy
B. Centre of gravity is offset from the posts
C. Equalizer cables are out of adjustment
D. The swing-arm pads are improperly positioned - Answer Answer is C. Over time and usage,
the Equalizer cables will stretch, causing two sides to be uneven. In order to prevent these
problems, cables should be checked monthly.
What type of fire extinguisher is used to safely put out Class A-, B-, C-, and D-category fires? -
Answer Only Dry Chemical extinguishers can be used to put out all four categories of fires.
Where must procedures for cleaning up a spill be outlines on a potentially hazardous product>?
- Answer Safety Data Sheet (SDS)
What must be completed within 24 hours of a workplace accident that has caused an injury? -
Answer Workplace Safety and Insurance Board (WSIB report)
Which publication would contain job-time and parts-cost information? - Answer Estimate
Guide
Where must the Vehicle Identification Number (VIN) be displayed? - Answer Top of driver's-
side dashboard
By how much can automotive repair bill legally exceed a job estimate in most Canadian
jurisdictions? - Answer By 10%, but to ensure accuracy make sure to check with the Protection
act in your jurisdiction
Why is the intake valve opened before Top-Dead-Centre (TDC) during the exhaust stroke? -
Answer To allow the outgoing gases to help draw in the intake charge.
, What shape is a cold, cam-ground piston? - Answer Slightly oval
What happens to a Plastigage™ strip when friction-bearing clearance increases? - Answer It
becomes narrower than the specified width.
When an interference angle is used, what would the angle difference be between the valve and
seat? - Answer 1°
What must be done if the crankshaft endplay exceeds specifications? - Answer Replace the
thrust bearing
What tool(s) are used for measuring a cylinder head for warpage? - Answer Straight edge and
feeler gauges
When a cylinder head valve is equipped with 2 valve springs, what else should be true?
A. Coil thickness must be identical
B. Both must have the same spring rate
C. They are wound oppositely
D. Valve rotators be used - Answer Answer is C. This cancels each springs tendency to generate
harmonics.
What could cause a spike in a coolant pressure tester's reading when the vehicle is started? -
Answer A leaking head gasket.
Which of the following could be caused by replacing a radiator cap with one of a higher-than-
specified pressure?
A. Boiling coolant
B. Thermostat failure
C. Head gasket damage
D. Improper radiator cap vacuum valve operation - Answer Answer is C. The higher operating
pressure could allow the coolant to force its way past the weakest areas of the cooling system,
generally gaskets and hoses.
What diagnostic test can b performed on an uninstalled used engine to verify its mechanical
condition prior to its installation in a vehicle? - Answer A cylinder leakage test.
When performing valve lash adjustments, in what position must each valve be? - Answer The
valve must be closed on the base circle of the cam lobe.
Canadian-Questions and Correct
Answers.
What level of eye protection is required when using an oxy-acetylene torch to cut mild steel? -
Answer Goggles with a #5 filter
A vehicle being raised on an electric two-post, double swing-arm hoist beings to riase unevenly
side to side. What is the most probable cause?
A. The car is too heavy
B. Centre of gravity is offset from the posts
C. Equalizer cables are out of adjustment
D. The swing-arm pads are improperly positioned - Answer Answer is C. Over time and usage,
the Equalizer cables will stretch, causing two sides to be uneven. In order to prevent these
problems, cables should be checked monthly.
What type of fire extinguisher is used to safely put out Class A-, B-, C-, and D-category fires? -
Answer Only Dry Chemical extinguishers can be used to put out all four categories of fires.
Where must procedures for cleaning up a spill be outlines on a potentially hazardous product>?
- Answer Safety Data Sheet (SDS)
What must be completed within 24 hours of a workplace accident that has caused an injury? -
Answer Workplace Safety and Insurance Board (WSIB report)
Which publication would contain job-time and parts-cost information? - Answer Estimate
Guide
Where must the Vehicle Identification Number (VIN) be displayed? - Answer Top of driver's-
side dashboard
By how much can automotive repair bill legally exceed a job estimate in most Canadian
jurisdictions? - Answer By 10%, but to ensure accuracy make sure to check with the Protection
act in your jurisdiction
Why is the intake valve opened before Top-Dead-Centre (TDC) during the exhaust stroke? -
Answer To allow the outgoing gases to help draw in the intake charge.
, What shape is a cold, cam-ground piston? - Answer Slightly oval
What happens to a Plastigage™ strip when friction-bearing clearance increases? - Answer It
becomes narrower than the specified width.
When an interference angle is used, what would the angle difference be between the valve and
seat? - Answer 1°
What must be done if the crankshaft endplay exceeds specifications? - Answer Replace the
thrust bearing
What tool(s) are used for measuring a cylinder head for warpage? - Answer Straight edge and
feeler gauges
When a cylinder head valve is equipped with 2 valve springs, what else should be true?
A. Coil thickness must be identical
B. Both must have the same spring rate
C. They are wound oppositely
D. Valve rotators be used - Answer Answer is C. This cancels each springs tendency to generate
harmonics.
What could cause a spike in a coolant pressure tester's reading when the vehicle is started? -
Answer A leaking head gasket.
Which of the following could be caused by replacing a radiator cap with one of a higher-than-
specified pressure?
A. Boiling coolant
B. Thermostat failure
C. Head gasket damage
D. Improper radiator cap vacuum valve operation - Answer Answer is C. The higher operating
pressure could allow the coolant to force its way past the weakest areas of the cooling system,
generally gaskets and hoses.
What diagnostic test can b performed on an uninstalled used engine to verify its mechanical
condition prior to its installation in a vehicle? - Answer A cylinder leakage test.
When performing valve lash adjustments, in what position must each valve be? - Answer The
valve must be closed on the base circle of the cam lobe.
