2008 Volkswagen Jetta 2.5L- P0456 Evap Small Leak- Evap leak test without a smoke machine

08 vw jetta 2.5l engine with p0456 evap small leak detected and p3078 throttle control airflow too low at idle, this airflow too low code can be caused by a few things, intake leaks or a dirty throttle body, it is very common on these for the purge valves to not seal correctly and cause an internal evap leak, my main focus is to show you how to perform an evap leak test with a scantool and quickly identify if there is a leak in the system and if the leak is in fact caused by a faulty purge valve, hope you enjoy thanks for watching