Auto ch 12 engine repair

Too much oil in the engine:

a. can cause engine oil foaming.

The oil additive that collects particles that can block the system is called a(n):

a. dispersant.

A scavenge pump is used on a:

a. dry sump oil system.

An oil pump that is capable of delivering a larger amount of oil than a stock oil pump is called a:

a. high-volume pump.

Oil that has the properties of two separate viscosity oils is known as:

a. multiviscosity oil.

Technician A says that oil changes are unnecessary as long as the oil is at the correct level. Technician B says that some engines may have more than one oil drain plug. Who is correct?

b. Technician B

Technician A says that synthetic blend oil has the same service life as that of full synthetic oils. Technician B says that conventional oils have a shorter service life than that of synthetic oils. Who is correct?

b. Technician B

Technician A says that the API service symbol is located in the engine bay to ensure the correct oil is being used. Technician B says that the API service symbol is located on the oil bottle to ensure the correct oil is being used. Who is correct?

b. Technician B

Technician A says the pressure relief valve keeps the engine from becoming damaged if the oil filter clogs. Technician B says that the bypass valve prevents the engine from becoming damaged if the oil filter clogs. Who is correct?

b. Technician B

The oil additive that reduces the effect of oil churning in the crankcase is known as a(n):

b. antifoaming agent.

Lubricating oil that is used in engines is made by refining:

b. crude oil.

Acids form in engines as a result of:

b. engine blow-by gases.

The passages that oil passes through to get to different parts of the engine are called oil:

b. galleries.

Diesel engines operate at:

b. higher temperatures than gasoline engines.

All of the following are important steps when checking the oil level, EXCEPT:

b. make sure the engine is running.

The reason oil levels may be low can be all of the following, EXCEPT:

b. oil burning because of a clogged air filter.

Technician A says that on a pressure-fed oil system, oil is fed to the different bearings by way of:

b. oil galleries.

Because diesel engines create more BTUs of energy than gasoline engines:

b. their engine oils are classified differently.

How often should the oil in a vehicle be checked?

c. Each time or every other time you fill the gas tank

Technician A says that Automotive Service Excellence (ASE) sets the performance standards for motor oil. Technician B says that the American Petroleum Institute (API) sets performance standards for motor oil. Who is correct?

d. Neither Technician A nor Technician B

Technician A says that detergents keep oil from forming wax deposits under cold temperatures. Technician B says that dispersants reduce carbon deposits on parts such as piston rings and valves. Who is correct?

d. Neither Technician A nor Technician B

Which of the following is NOT a function of lubricating oil?

a. Burn

Technician A says that an oil drain plug gasket made of aluminum, plastic, or fiber is reusable. Technician B says that a drain plug with an integrated silicone gasket is reusable as long as it is in good condition. Who is correct?

Technician B

Technician A says that a dry sump system uses no oil storage sump under the engine. Technician B says that a wet sump system uses no oil storage sump under the engine. Who is correct?

a. Technician A

Technician A says that before checking the oil level, the vehicle must be on a level surface. Technician B says that the vehicle should be placed on jack stands. Who is correct?

a. Technician A

Technician A says that most oil pumps are positive displacement type pumps. Technician B says that most oil pumps are centrifugal type pumps. Who is correct?

a. Technician A

Technician A says that the American Petroleum Institute (API) group 4 is the most common synthetic oil. Technician B says that group 1 oils are not suitable for use in automobiles. Who is correct?

a. Technician A

Technician A says that the first parts of the engine to be lubricated are the crankshaft bearings. Technician B says that the rocker arms are the first engine parts to be lubricated. Who is correct?

a. Technician A

Another name for the oil pickup tube is the:

a. oil strainer.

The strainer on the oil pickup tube is designed to:

a. stop large particles of debris from entering the oil pump

Technician A says that to ensure that the oil filter does not leak, you may use two gaskets. Technician B says that using two gaskets could cause an oil leak when the oil is pressurized. Who is correct?

b. Technician B

Technician A says that when installing an oil filter, you should tighten it with a filter wrench to prevent it from falling off. Technician B says that oil filters should only be installed by hand. Who is correct?

b. Technician B

To prevent oil churning, some performance vehicles utilize a:

b. windage tray.

Technician A says that how long an engine lasts is directly related to how well it is lubricated. Technician B says that the lubrication system helps cool the engine components. Who is correct?

c. Both Technician A and Technician B

Technician A says that magnets are used in some systems to attract metal particles and hold them to be cleaned off. Technician B says that some manufacturers use magnetic oil plugs that hold metal particles. Who is correct?

c. Both Technician A and Technician B

Technician A says that oil pressure is vital to engine operation. Technician B says that a pressure sensor can turn on a light to alert the driver of low oil pressure. Who is correct?

c. Both Technician A and Technician B

Technician A says that when draining engine oil, you run the risk of getting burned, as the oil is typically changed after the engine is warmed up. Technician B says to be safe, always drain oil while the engine is cold. Who is correct?

c. Both Technician A and Technician B

Technician A says that when filling an engine with oil, you fill it until oil is coming out of the filler hole. Technician B says that it is a best practice to check the oil before and after running the vehicle. Who is correct?

c. Both Technician A and Technician B

Technician A says that when removing the oil, it can be easy to confuse the oil drain plug and the transmission drain plug. Technician B says that drain plugs should be tightened to the manufacturer recommended torque specification. Who is correct?

c. Both Technician A and Technician B

The additive found in oil that minimizes the formation of air bubbles in the oil is called a(n):

c. antifoaming agent.

Because of its design, the oil reservoir for a dry sump lubrication system can be mounted:

c. away from the engine.

Synthetic oils:

c. can operate at higher temperatures.

In a wet sump system, oil is cooled:

c. in the sump or oil pan

The oil additive that keeps oil from gelling under cold temperatures is called a(n):

c. pour point depressant.

A crescent oil pump is mounted to:

c. the front of the engine.

The lowest point of the oil pan is the:

c. the oil sump.

The oil additive that helps reduce the change in the oil's ability to flow as the temperature of the oil changes is a(n):

c. viscosity index improver.

Most oil pumps are the ___________ displacement type.

d. positive

The "W" in 5W-30 stands for:

d. winter.