A visual inspection of the engine assembly for leaks will affirm the ability of the Select one:

The_______ measures the amount of compression pressure an engine's cylinder can generate. Select one:

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: Select one:

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? Select one:

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? Select one:

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? Select one:

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

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 particular cylinder. Select one:

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? Select one:

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. Select one:

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. Select one:

When doing the cylinder leakage test, it is acceptable to have a small amount of leakage past the: Select one:

Technician A says that a cylinder leakage test is performed on a cylinder with low compression to determine the severity of the leak and where it is located. Technician B says that manufacturers will consider up to 50% cylinder leakage past the piston rings acceptable. Who is correct? Select one:

A light knocking noise that comes under slight rocking of the throttle could be caused by: Select one:

A light ticking noise could be caused by a problem in the: Select one:

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. Select one:

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? Select one: