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Worksheetsengine repair 12/8/2022
Total questions: 10
Worksheet time: 11mins
Overhead cam engines timing chains may use ______tensioners
Mechanical
Spring
Hydraulic
All of the above
Timing belt service intervals are critical on many engines because
timing affects idle quality
loose belts may damage the water pump
valve damage may occur if the belt fails
Both A and C
An engine emits blue smoke for a few seconds when starting cold; the MOST likely cause is
Fuel system is too lean
A coolant leak to the cylinder
Worn valve seals
Worn piston rings
What is the primary advantage of round-toothed timing belts when compared to square-toothed timing belts?
Less expensive
Higher torque capacity
Shorter service intervals
Quieter operation
When replacing a cylinder head gasket, which type of head bolts should allows be replaced?
torque to yield
Grade 5
only the failed ones
those showing fatigue
A plastigage is used to determine
piston clearance
main and rod bearing clearance
valve spring clearance
crankshaft end play
What is a micrometer used for?
To measure wheel base
To check tire pressure
To determine temperature
Precision measurements
Which of the following is not part of a connecting rod
I-beam
Lobe
cap
bushing
If an engine noise can be reduced or eliminated by shorting out an individual cylinder, the most likely cause is
Worn timing gears
A cracked flex plate
Worn cam lobe or follower
Worn connecting rod bearing
Excessive tread wear on both tread shoulders is probably caused by
over inflation
under inflation
out of balance
incorrect camber
