Powertrain & Mechanical Systems Evaluation Flashcards
7 cards from real CVA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Powertrain & Mechanical Systems Evaluation flashcards as text
Which tool does an appraiser typically use to assess individual cylinder health by measuring internal pressure?
Answer: Compression tester
A compression tester measures cylinder pressure to identify worn rings, damaged valves, or head gasket failure that directly affect engine condition.
Blue smoke emitting from a vehicle's exhaust most likely indicates which engine condition?
Answer: Engine oil burning in the combustion chamber
Blue smoke indicates engine oil is burning in the combustion chamber, typically caused by worn piston rings, valve stem seals, or turbocharger seal failure.
An OBD-II scan reveals a P0300 fault code. What does this code indicate?
Answer: Random or multiple cylinder misfires detected
P0300 is a generic powertrain code indicating random or multiple cylinder misfires, which can signal ignition, fuel delivery, or compression problems.
During inspection, an appraiser finds the engine oil has a milky, frothy appearance on the dipstick. What does this most likely indicate?
Answer: Coolant has contaminated the engine oil
Milky or frothy engine oil indicates coolant contamination, most commonly caused by a blown head gasket or cracked engine block, which is a serious mechanical defect.
A vehicle has 185,000 miles with an original timing chain and no service records showing replacement. How should an appraiser handle this?
Answer: Document it as deferred maintenance with a potential value impact
A high-mileage timing chain with no replacement history represents deferred maintenance that risks catastrophic engine failure and should be documented as a value-impacting factor.
Which of the following best describes an engine that has 'seized'?
Answer: An engine whose internal components have locked up from lubrication failure or overheating
A seized engine has internal moving components that have locked together, typically from oil starvation or extreme overheating causing metal expansion beyond tolerances, rendering the engine inoperable.
Which factor is LEAST relevant when an appraiser evaluates the condition and value impact of a used vehicle's engine?
Answer: The current oil viscosity grade in the crankcase
The current oil viscosity grade is a routine maintenance choice with minimal bearing on engine condition assessment, unlike overheating history, modifications, or replacement history, which all materially affect value.