ASE Practice Test (A1: Engine Repair)

Question 1

The cylinder head's surface has just been machined. What will have to do to the valve train?

Accepted Answer

Grinding valve stems

Answer

Lengthening the push rods

Answer

Shim the head

Answer

Increasing valve spring tension

Question 2

A cylinder leakage test is used to diagnose an engine miss. Technician X says that any cylinder with over 20 percent leakage has excessive leakage. Technician Y says that air leaking from the tailpipe indicates a cracked cylinder head. Who is right?

Accepted Answer

X only

Answer

Both X and Y

Answer

Neither X nor Y

Answer

Y only

Question 3

The engine is making a rattling noise, according to a client. It's coming from the drive belt/serpentine belt system, according to Technician A. The following step is to:

Accepted Answer

Inspect the pulleys for signs of excess play or bearing noise

Answer

Replace the drive belt

Answer

Replace the drive belt tensioner

Answer

Inspect the drive belt for signs of wear

Question 4

Which of the following causes a flapping noise near the front of the engine?

Accepted Answer

Timing belt tension too loose

Answer

Drive belt too tight

Answer

Drive belt too loose

Answer

Timing belt tension too tight

Question 5

When the engine is cold, an engine noise sounds like a knock on the side of the engine. When the engine achieves operational temperature, the noise goes gone or is lessened. Which of the following is the MOST LIKELY reason for the problem?

Accepted Answer

Piston slap

Answer

Cam bearing

Answer

Wrist pin

Answer

Main bearing

Question 6

An idle vacuum test is carried out by a technician. The 2001 Sedan's test results show a pressure of 11 in. Hg. What should the technician check next?

Accepted Answer

Check for proper timing

Answer

Look for weak valve springs

Answer

Check for exhaust restriction

Answer

Look for a sticking valve

Question 7

While cleaning the pleated paper-type air filter element, the air gun should be held:

Accepted Answer

Away from the inside of the air filter element.

Answer

Directly against the inside of the air filter element.

Answer

Away from the outside of the air filter element.

Answer

Directly against the outside of the air filter element.

Question 8

When doing an engine compression test, you must disable the fuel injection, ignition systems and all of the following reasons, except:

Accepted Answer

Prevents inaccurate readings

Answer

Prevents damage to the ignition system during the test

Answer

Prevents fuel injection into the cylinders

Answer

Prevents shop engine fire

Question 9

A power balance test is being performed on an engine. Technician X says to note the engine RPM before and during the test for each cylinder. Technician Y says to record the RPM drop for each cylinder. Who is right?

Accepted Answer

Both X and Y

Answer

Neither X and Y

Answer

X only

Answer

Y only

Question 10

An air leak within the cylinder is what you're searching for when performing an engine compression test. This test will reveal air leaks in all of the following, with the exception of which?

Accepted Answer

PCV valve

Answer

Cylinder head gasket

Answer

Intake or exhaust valve

Answer

Piston rings

The cylinder head's surface has just been machined.What will have to do to the valve train?

The cylinder head's surface has just been machined.
What will have to do to the valve train?