Engine Leak-Down Test Quiz

Engine Leak-Down Test Quiz

University

20 Qs

quiz-placeholder

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Engine Leak-Down Test Quiz

Engine Leak-Down Test Quiz

Assessment

Quiz

Mathematics

University

Easy

Created by

Jason Nesbitt

Used 2+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a leak-down test measure in an engine?

Oil pressure

Cylinder leakage percentage

RPM

Fuel pressure

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What must be done before performing a leak-down test?

Drain the oil

Remove the spark plugs

Turn on the AC

Add octane booster

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which position should the piston be in during a leak-down test?

Bottom Dead Center (BDC)

Any position

Top Dead Center (TDC) on compression stroke

TDC on exhaust stroke

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A high leakage reading typically indicates:

Strong compression

Normal operation

An internal problem

A good valve seat

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary tool used for a leak-down test?

Vacuum gauge

Compression tester

Leak-down tester with regulator and gauges

Torque wrench

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a normal cylinder leakage percentage?

0–5%

10–15%

50–60%

70–80%

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Leakage through the oil filler cap usually indicates a problem with:

Head gasket

Exhaust valve

Piston rings

Intake valve

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