Dynamic Duo of Diagnostics: Smoke tester and Scan Tools, with Dave Hobbs. Watch Now.

Sometimes techs under think and just hook up their smoke machine to the evap test port and ‘let her rip’ (maybe closing the vent solenoid) and other techs over think by trying to use their scan tool to run all sorts of tests watching the tank pressure sensor while ignoring the smoke machine.  In this video clip, watch Dave explain the right combination of scan tool and smoke machine usage to find the source of your evap leak.