A visual inspection of the engine assembly for leaks will affirm the ability of the _______ to contain each of the engine's fluids.

A _______ pumps air into the engine's cylinder and measures the percentage of air that is leaking from that cylinder.

The noises that you could hear during a cranking sound diagnosis include all of the following EXCEPT:

Technician A says that low compression on a single cylinder will cause an engine not to start. Technician B says that low compression on a single cylinder will affect the engine's cranking sound. Who is correct?

When performing a cranking sound diagnosis, Technician A says that all engines may be prevented from starting by holding the throttle wide open while cranking. Technician B says that an engine may be disabled by removing the fuel pump fuse or relay (if equipped). Who is correct?

Technician A says vacuum traces should be taken at idle, 1,200 rpm, and 2,500 rpm when using a pressure transducer. Technician B says vacuum testing should only be performed at idle speed. Who is correct?

When testing intake manifold vacuum, the gauge reads normal at idle, but reads very low when the engine is held steady at 2,500 rpm. Technician A says this indicates worn valve guides. Technician B says this indicates a restricted exhaust system. Who is correct?

When testing intake manifold vacuum, a low steady reading at idle is likely to be caused by:

If the engine has port fuel injectors that are accessible, disconnecting the electrical connector from each injector one at a time will shut off the fuel to that cylinder.

Technician A says when performing a power balance test, it is important to reactivate the disabled cylinder and allow the engine to run for at least 10 seconds to stabilize before disabling the next cylinder. Technician B says when performing a power balance test, you must shut down and restart the engine after disabling each cylinder. Who is correct?

During a running compression test performed at idle, because the engine is running and the throttle is relatively closed, the compression pressure will be approximately half of the cranking compression pressure.

In a __________, a high-pressure hose is hand-threaded in the spark plug hole of the cylinder to be tested and then connected to the compression gauge.

Technician A says that if the exhaust has a bluish tint, it indicates that engine is burning coolant. Technician B says that black exhaust indicates a rich fuel mixture. Who is correct?

When attempting to find the location of a leak from the engine assembly, add a compatible dye to the fluid you suspect is leaking, then operate the vehicle for the time recommended by the dye manufacturer to circulate the dye through the system.

The lubricating oil collects heat from the engine’s components and then returns to the oil pan, where it ______.

________ additives coat parts with a protective layer so that the oil resists being forced out under heavy load.

Pour point depressants keep oil from forming wax particles under ______ temperature operation.

Synthetic oils were developed in _______ during World War II due to the lack of crude oil.

Technician A says that API's "S" rating means it should only be used in supercharged engines. Technician B says that C rated oil is certified for use for cars, and not trucks. Who is correct?

Low-viscosity liquid is thin and flows easily.

The oil pump may be driven by the crankshaft or by the camshaft.

The oil sump's small external surface area helps heat transfer from the oil to the outside air.

Technician A says that spin-on oil filters use a square-cut rubber O-ring to seal the base of the filter to the engine block. Technician B says that some oil filters use a replaceable paper filter cartridge. Who is correct?

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

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?

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?

Technician A says that all components inside an automotive engine are pressure or force fed the oil that they need. Technician B says that some components rely on splash lubrication to function properly. Who is correct?

Most small four-stroke gasoline engines use:

Which of the following statements is true of a splash lubrication system?

Technician A says that the oil filter should be changed every time the oil is changed. Technician B says that the oil filter can be changed every other oil change. Who is correct?

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

Technician A says that a low oil level can cause engine overheating. Technician B says that a high oil level can cause oil foaming. Who is correct?

Technician A says that the viscosity of engine oil is not affected by temperature. Technician B says that the viscosity of engine oil decreases as temperature increases. Who is correct?

Which of the following is NOT a characteristic of synthetic oil?

During a power balance test, Technician A says that disabling a cylinder will cause a drop in RPM. Technician B says that a cylinder that does not cause a drop in RPM when disabled is likely faulty. Who is correct?