Chapter 14 - Cooling Systems

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

The radiator cap should be removed only when the engine is at full operating temperature.

False

For every 1 pound of pressure put on engine coolant, the boiling point of the coolant is raised about _____ degrees Fahreheit degrees (_____ degrees Celsius).

3, 1.7

Technician A says cooling system pressure is regulated by the pressure relief valve in the water pump. Technician B says cooling system pressure is regulated by the radiator cap. Who is correct?

A only

Two technicians are discussing a car with a very noisy water pump. The pump makes a lot of noise but is not leaking coolant. Technician A says the owner can continue to drive the vehicle as long as there are no signs on coolant leakage. Technician B says the water pump must be replaced immediately. Who is correct?

B only

The water pump on many late model engines is driven by the engine's timing belt or timing chain.

True

Used coolant cannot be poured down the drain or into a sewer and must be reclaimed or recycled.

True

Technician A says a cooling system pressure tester is used to test for leaks in the radiator, hoses, water pump, thermostat, and engine assembly. Technician B say the cooling system pressure tester is used to check the operation of the relief valve in the radiator cap. Who is correct?

both A and B

During engine warm-up, when the thermostat is closed, _____.

coolant flows through the bypass passage

In most automotive applications, the water pump is driven by the ______.

crankshaft

If the engine overheats during long periods of idling but runs normally at highway speeds, the problem is most likely_____.

defective cooling fan


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