Exam 48: Diagnosing Engine Performance Problems

Dirty fuel injectors can cause driveability problems and ____ at full throttle.

(Multiple Choice)

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Question 21

A fast way of locating a weak cylinder is with a cylinder power balance test. Then a ____________________ or leakage test can be performed to further pinpoint the cause of the problem.

(Short Answer)

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Question 22

Which of the following is LEAST-Likely an advantage of a leakage test over a compression test?

(Multiple Choice)

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Question 23

Above idle speed, symptoms of a leaking manifold diminish but still show up on the vacuum gauge.

(True/False)

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Question 24

How would you perform a cranking vacuum test?

(Short Answer)

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Question 25

Showing 21 - 25 of 25

Exam 48: Diagnosing Engine Performance Problems

Dirty fuel injectors can cause driveability problems and ____ at full throttle.

A fast way of locating a weak cylinder is with a cylinder power balance test. Then a ____________________ or leakage test can be performed to further pinpoint the cause of the problem.

Which of the following is LEAST-Likely an advantage of a leakage test over a compression test?

Above idle speed, symptoms of a leaking manifold diminish but still show up on the vacuum gauge.

How would you perform a cranking vacuum test?

Introduction to the Automobile

Automotive Careers and Technician Certification

Shop Safety

Shop Management, Service Records, and Parts

Locating Service Information and Specifications

Measuring Tools and Systems

Hardware, Fasteners, Drills, and Thread Repair

Shop Tools

General Shop Equipment

Cleaning Equipment and Methods

Lifting Equipment and Air Compressors

Engine Lubrication

Underhood and Body Inspection Car on Ground

Undercar Inspection and Service

Introduction to the Engine

Engine Classifications and Advanced Transportation Technologies

Engine Size and Measurements

Engine Upper End

Engine Lower End and Lubrication System Theory

Cooling System Theory

Cooling System Service

Automotive Belts

Automotive Hoses

Automotive Plumbing: Tubing and Pipe

Basic Electrical System Theory and Repairs

Battery Fundamentals

Battery Service

Starting System Fundamentals

Starting System Service

Charging System Fundamentals

Charging System Service

Lighting and Wiring Fundamentals

Lighting and Wiring Service

Safety, Security, Comfort Systems, and Electrical Accessories

Heating and Air Conditioning Fundamentals

Heating and Air Conditioning Service

Ignition System Fundamentals

Ignition System Service

Fuels and Alternative Fuels

Fuel System Fundamentals

Fuel System Service

Intake and Exhaust Systems, Turbochargers and Superchargers

Emission Control System Fundamentals

Emission Control System Service

Electronics and Computer Systems Fundamentals

Electronics and Computer Systems Service

Advanced Emissions and On-Board Diagnostics Odb

Diagnosing Engine Mechanical Problems

Engine Removal and Disassembly

Engine Sealing, Gaskets, Fastener Torque

Engine Diagnosis and Service: Cylinder Head and Valvetrain

Engine Diagnosis and Service: Block, Crankshaft, Bearings, and Lubrication System

Engine Diagnosis and Service: Piston, Piston Rings, Connecting Rod, Engine Balancing

Ordering Parts, Short and Long Blocks, Engine Assembly

Engine Installation, Break In, and In-Chassis Repairs

Brake Fundamentals

Brakes Service

Anti-Lock Brakes Traction and Stability Control

Bearings, Seals, and Greases

Tire and Wheel Theory

Tire and Wheel Service

Suspension Fundamentals

Suspension System Service

Steering Fundamentals

Steering Service

Wheel Alignment Fundamentals

Wheel Alignment Service

Clutch Fundamentals

Clutch Diagnosis and Service

Manual Transmission Fundamentals

Manual Transmission Diagnosis and Repair

Automatic Transmission Fundamentals

Automatic Transmission Diagnosis and Service

Driveline Operation