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.
