Question

in vehicles with cracks and leaks that result in an evap system failure, the use of a(n) ____ may be necessary to find the leaks in the system.

a. smoke machine
b. ultraviolet dye kit
c. scan tool
d. intrusive test

Explanation:

A smoke machine is commonly used to detect leaks in an EVAP (Evaporative Emission Control) system. It introduces smoke into the system, and where there are cracks or leaks, the smoke will escape, making the leak - location visible. Ultraviolet dye kits are more for detecting fluid leaks, scan tools are for reading diagnostic trouble codes, and intrusive tests are not the typical method for finding EVAP system leaks.

Answer:

A. Smoke machine