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:

To find leaks in an EVAP system with cracks/leaks, a smoke machine is commonly used. It injects smoke into the system, and the smoke escaping shows the leak location. An ultraviolet dye kit is for fluid leaks (like coolant/transmission), a scan tool diagnoses electronic issues, and an intrusive test isn't a standard leak - finding tool for EVAP. So the correct option is a.

Answer:

a. Smoke machine