Exam 8: Engine and Misfire Diagnosis

Technician A says that a leaking head gasket can be checked using a chemical tester. Technician B says that a leaking head gasket can be found using an exhaust gas analyzer. Which technician is correct?

A good reading for a cylinder leakage test would be ________.

An engine in good condition should have about ________ in. Hg. vacuum at idle.

What test equipment is needed to view the pressure waveform inside the cylinder?

How many compression strokes should be used during a compression test?

A smoothly operating engine depends on ________.

When performing a cylinder leakage test, the following statements are all correct EXCEPT ________.

Technician A says that during a power balance test, the cylinder that causes the biggest RPM drop is the weak cylinder. Technician B says that if one spark plug wire is grounded out and the engine speed does not drop, a weak or dead cylinder is indicated. Which technician is correct?

A P0300 DTC means ________.

Technician A says that if the oil pressure warning light is on, the oil pressure should be checked with a manual gauge. Technician B says that a faulty electrical circuit could cause the oil pressure warning light to come on even when the oil pressure is good. Which technician is correct?

The following statements are all correct EXCEPT ________.

Which of the following is NOT a cause of high exhaust back pressure?

A relative compression test uses a DSO to monitor ________ to determine the relative compression of each cylinder in the engine while it is being cranked.

Technician A says to always wait five minutes before removing the radiator cap from a hot engine. Technician B says that leaking coolant may cause a rust-colored stain. Which technician is correct?

Which of the following could result in low engine compression?

A running compression test is used to locate what type of engine problems?

While performing a cylinder leakage test, technician A says that 20% leakage is acceptable. Technician B says that a cylinder will show too much leakage if the piston is not at TDC on its compression stroke. Which technician is correct?

The low oil pressure warning light usually comes on ________.

Normal engine vacuum at idle is ________.

Which of the following is the least likely to cause an engine noise?