Exam 14: Lubricating and Cooling Systems

Most oil pressure gauges are ____________________ controlled.

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?

Which of the following tools can be used to test the operation of the thermostat without removing it from the engine?

When crankcase pressure is abnormally low, oil is forced out through joints that normally would not leak.

Metal temperatures around the combustion chamber can run as high as ____________________ degrees Fahrenheit.

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

A voltmeter is used to check the cooling system for ____________________.

A pressure relief (regulator)valve, located inside the oil filter, is designed to limit engine oil pressure.

Two technicians are discussing oil filters. Technician A says the oil filter has an anti-drain-back valve that prevents the oil in the filter and engine oil passages from returning to the sump when the engine is shut down. Technician B says the oil filter has a bypass valve that in the event the filter becomes plugged, oil can flow directly to the bearings. Who is correct?

To drain a cooling system that does not have a petcock or drain plug in the radiator, ______.

What does blue exhaust smoke indicate?

Which hose typically has a spiral wire reinforcement?

What is the function of a fan clutch?

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

Which of the following is a function of the engine's lubrication system?

Normally between 30 and 50 percent of the engine's coolant remains in the system after the radiator has been drained.

What is the function of a pressure relief valve in an oil pump?

Which of the following cooling system hoses is normally subjected to the roughest service life?

To save power and reduce noise levels, most late model vehicles have an electrically driven cooling fan.

Hose sizes are based on their ____________________  diameter.