I remember a few years back having my check engine light turn on in my 2002 Dodge Ram (3.7 L). I recall that the evap leak code came up and that I bought a new gas cap. Also, I vaguely remember being angry at myself for buying a new gas cap because I discovered the major (and obvious) source of the leak a few days later.
The dreaded evap leak code has returned again, and now I can't remember what the source of it was last time (I've already checked the gas cap and that's not it). Anyone have any ideas about what I should check? If not, does anyone know how to build a time machine so that I can go back and ask my younger self how I fixed the problem last time?