Which of the following is necessary for hearing to occur?

Two technicians are discussing oil leaks. Technician A says that an oil leak can be found using a fluorescent dye in the oil with a black light to check for leaks. Technician B says a white spray powder can be used to locate oil leaks. Who is right?

Two technicians are discussing variable valve timing. Technician A says that changing the exhaust valve timing helps reduce exhaust emissions. Technician B says that changing the intake valve timing helps increase low-speed torque. Who is right?

Oil leaving the oil filter is delivered to the oil passages.

The coolant flow through the radiator is controlled by the ________.

In typical engine lubrication systems, what components are the last to receive oil and the first to suffer from a lack of oil or oil pressure?

A good engine should produce how much compression during a running (dynamic) compression test at idle?

The purpose of the oil filter bypass valve is to ________.

Which of these smoke types indicates excessive fuel being burned in the combustion chamber?

Technician A says that engine parts need to be be cleaned before a thorough test can be done to detect cracks. Technician B says that pressure testing can be used to find cracks in blocks or cylinder heads. Who is right?