Engine Mechanical Problem Diagnosis Vocab Sheet

Question 1

When a Cam Lobe wears out.

Answer 1

Flat Cam

Question 2

Noises that result from excessive clearance or abnormal combustion.

Answer 2

Engine Knocks

Question 3

Term used when a crankshaft will not turn.

Answer 3

Seized Engine

Question 4

Can occur at 1/2 engine rpm.

Answer 4

Valvetrain Noise

Question 5

Carbon has built up in the neck area of a valve. What is the problem cause?

Answer 5

Valve Guide Seal

Question 6

Problem with an engine that has lower oil pressure at idle speed.

Answer 6

Worn Lower Main Bearings

Question 7

A test for oil leakage that uses fluorescent dye and an ultraviolet light source.

Answer 7

Black Light

Question 8

Bad valve guide seals could cause oil smoke from the exhaust during _________

Answer 8

Deceleration

Question 9

Noise that results from excessive clearance between the piston and the cylinder.

Answer 9

Piston Slap

Question 10

Damage that results when an engine runs for a long period with an excessively lean air-fuel mixture.

Answer 10

Burned Spark Plugs

Question 11

When coolant or fuel in a cylinder prevents an engine from turning over.

Answer 11

Hydro-locked Engine