Diagnostic Aids
WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
To help locate intermittent leaks, use the Evaporative Emissions System Tester (J-41413-200) to introduce smoke into the EVAP system. Move all EVAP components while observing smoke with the High Intensity White Light (J-41413-SPT). To improve visibility of the smoke exiting the EVAP system, observe the suspected leak area from different angles with the High Intensity White Light. For intermittent conditions, refer to INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.