ASE Engine Repair A1 3

Question 1

During an engine rebuild, a technician measures the piston ring end gap and finds it is smaller than the manufacturer's minimum specification. What is the correct action?

Accepted Answer

File the ring ends to increase the gap to spec

Answer

Install the ring as-is since tighter is better for compression

Answer

Replace the rings with a smaller bore size

Answer

Hone the cylinder to reduce its diameter

Question 2

A technician is checking main bearing clearance using Plastigage. After removing the cap, the Plastigage strip is wider than the comparison scale indicates. What does this mean?

Accepted Answer

The bearing clearance is greater than specification

Answer

The bearing clearance is less than specification

Answer

The crankshaft journal is within tolerance

Answer

The Plastigage was installed incorrectly

Question 3

What is the purpose of a valley gasket (valley pan gasket) in a V-type engine?

Accepted Answer

It seals the lifter valley area to prevent oil leaks into the intake system

Answer

It seals the intake manifold to the cylinder heads

Answer

It seals the timing cover to the block

Answer

It seals the oil pan to the block

Question 4

A technician notices a deep groove worn into a camshaft lobe on one cylinder. Which component is most likely the primary cause of this failure?

Accepted Answer

Failed hydraulic lifter not rotating on the lobe

Answer

Worn timing chain

Answer

Incorrect valve spring pressure

Answer

Stretched rocker arm studs

Question 5

Which method is used to check for a warped cylinder head on a removed head?

Accepted Answer

Place a straightedge and feeler gauge across multiple directions on the deck surface

Answer

Measure with a dial bore gauge across the combustion chambers

Answer

Pressure test the head with compressed air and water

Answer

Check the head with a magnetic crack detector only

Question 6

What does the term "deck height" refer to in engine rebuilding?

Accepted Answer

The distance from the top of the piston to the block deck surface at TDC

Answer

The height of the valve stems above the cylinder head

Answer

The depth of the combustion chamber in the cylinder head

Answer

The clearance between the piston skirt and cylinder wall