In this video, i’ll show you how to use a smoke machine to quickly and effectively find evap system leaks on your car or truck If you don’t see any indicators on your dashboard, it’s unlikely you’ve got an evap leak. An evap leak can trigger a check engine light and cause trouble.
How to Fix P0442: Evaporative Emission System Leak (small leak). Test
The most common sign of an evap system problem is a “check engine” light
Other signs include a strong gasoline odor coming from the car and/or failed smog tests
The best way to test for evap system leaks is with a smoke machine This device pumps harmless smoke into the evap system and allows you to see exactly where the leak is coming from. The evap system itself features several key components, including the evap (charcoal) canister, fuel tank, fuel tank vent, and evap purge solenoid The evap system is a core component of the engine’s emissions system, so if there’s an evap leak your check engine light should come on
