Challenge Your Exam Readiness With Our Free A Series Practice Questions

Question # 71

A vehicle fails emissions due to high HC (hydrocarbon) levels. Which condition is most likely?

Options:

A.

Misfire due to weak ignition

B.

Vacuum leak

C.

Lean fuel mixture

D.

Restricted exhaust

Viewing question 71 out of 72 questions
Industry research shows that students who utilize A Series practice tests are significantly more likely to pass exam.


Our free A Series practice questions act as a diagnostic tool to give you a clear snapshot of your A Series readiness. Discover which topics are your strengths and, more importantly, which critical topics require your immediate attention.

Go to A Series Exam Main Page

A Series Overview

Name A Series
Code A Series
Vendor Skilled Trades
Certification ASE

A Series Questions