Exam 49: Diagnosing Engine Mechanical Problems

A leaking head gasket will always show up on a pressure test.

All of the following statements are true EXCEPT:

In which locations can internal leaks occur?

Which of the following would LEAST-Likely be used to check for internal air leaks before the engine is disassembled?

What are the possible causes of lifter noise?

Why should you properly diagnose an engine before disassembly?

When looking for a cause for oil consumption, technicians will often check an engine's ____________________.

When engine oil has not been regularly changed, thick, dirty oil can plug the oil return holes in the cylinder head.

The part that is MOST-Likely to be a good indication of what is taking place in a cylinder is the:

Internal leaks are diagnosed using the compression tester.

The condition that will MOST-Likely intensify noise caused by excessive rod side clearance is:

Why do valve train noises occur at half the speed of engine crankshaft rpm?

When a starter motor will not crank the engine over and the engine cannot be turned over by hand, this is called a(n) ____________________.

Which of the following is LEAST-Likely the cause of compression loss?

On a rebuilt engine with relatively low mileage, oil leakage past the valve guide seals is a more likely cause of oil consumption than leakage past piston rings.

Water leaking into the crankcase will contaminate the oil. This is called ____________________.

While having a discussion, Technician A says that according to the Ford Motor Company, there are approximately 36,500 drops of oil in 1 quart. Technician B says that according to Ford, there are approximately 16,500 drops of oil in 1 quart. Who is correct?

While having a discussion, Technician A says that a rear main bearing seal leak is indicated when there is oil on the transmission side of the torque converter. Technician B says that a rear main bearing seal leak is indicated when there is oil on the engine side of the flywheel or torque converter. Who is correct?

____________________ occurs when oil is washed from cylinder walls.

How would you test for a cracked flexplate?