Chapter 27

Question 1

Hybrid electric vehicles are designed to stop gasoline engines unless needed and this features is called.

Answer 1

Idle stop

Question 2

When replacing the timing belt the cam shaft timing is verified by

Answer 2

Rotating the engine several revolutions

Question 3

When replacing timing belts, which of the final is most likely done to reduce warpage of engine parts?

Answer 3

The engine is cool before replacing the timing belt?

Question 4

Timing belts have been limited service in a specified replacement interval ranging from

Answer 4

60000 miles 100000 miles miles.

Question 5

Or replacing an inline gasket manifold. Which of the following is done to ensure that the manifold does not warp when removed.

Answer 5

The fasteners are loosened in the reverse order of the tightening sequence

Question 6

The expansion or contraction rate difference between manifolds and cause intake manifold gasket to be damaged by the relative motion of the head and intake manifold.

Answer 6

Fretting

Question 7

A blank thermostat works but not within the correct temperature range, therefore the engine could overheat or operate cooler than normal. Or even do both.

Answer 7

Skewed

Question 8

When is a p 0128 diagnostic trouble code set in an engine?

Answer 8

When the thermostat is stuck partially open.

Question 9

Which chemical substance is used to check for air leaks and intake manifold gasket

Answer 9

Propane

Question 10

What is meant by the term interference engine?

Answer 10

The valves will be bent if the timing belt is installed incorrectly

Question 11

What other components are recommended for replacement when replacing a timing belt?

Answer 11

Tensioner assembly, water pump, front oil seals.

Question 12

The technician a says to drain all the coin before placing a thermostat.

Answer 12

false

Question 13

technician b says to drain the coolant below the level of the thermostat and then replace the thermostat

Answer 13

true

Question 14

The thermostat opens to allow coolant to circulate to the radiator.

Answer 14

True

Question 15

A common failure pattern of a thermostat and vehicle.

Answer 15

If the thermostat is skewed the engine can overheat

Question 16

The gaskets of a water pump should be cleaned before installing a new water pump.

Answer 16

True

Question 17

Which of the following is true of the diagnosis of a leaking inlet manifold gasket?

Answer 17

If an engine, speed and noise changes when propane is dispensed around inlet manifold gasket a air leak is present.

Question 18

The technician a stated that the timing belt shall be replaced if it is contaminated with coolant.

Answer 18

True

Question 19

Technician b said the the timing belt should be replaced if it meets or exceeds the vehicle manufacturers recommended timing belt replacement interval.

Answer 19

True

Question 20

Technician a stated that when replacing the timing belt the warpage of engine parts, should be eliminated.

Answer 20

True

Question 21

Technician b stated that more more warpage of engines is eliminated by allowing the engine to get heated

Answer 21

false

Question 22

Technician. A stated that when handling hybrid engines orange electrical wires are safe to handle.

Answer 22

False

Question 23

Technician b stated that the gasoline engine and hybrid electric vehicles specifies high viscosity engine oil as a way to achieve maximum fuel economy.

Answer 23

False

Question 24

The thermostat can fail in which way

Answer 24

Stuck open, stuck closed, stuck partially open.

Question 25

The water pump can fail to provide the proper amount of flow of cooling to the cooling system if what happened.

Answer 25

The Coolant is leaking from the weep hole.

Question 26

Coolant drained from the cooling system when replacing a thermostat or water pump should be.

Answer 26

Disposed of properly or recycled.

Question 27

Hybrid electric vehicles usually require special engine oil of what viscosity.

Answer 27

Sae 0w-20.

Question 28

The torque specifications for many plastic intake manifolds are in what unit

Answer 28

Pound inches

Question 29

When replacing a timing belt, many experts and vehicle manufacturers recommend that what other parts should be replaced.

Answer 29

Tensioner assembly, water pump , cam shaft oil seals.

Question 30

A plastic intake manifold may have a different design or appearance from the original factory installed part

Answer 30

True