Thus spake "jim L" <jtl57@bellsouth.net> :

>Since it is Wednesday, I predict someone has already answered this. It's
>not causing any problems - i'm just curious.
>
>94 civic EX - right after starting when cold, I often smell gas in cabin -
>for maybe 10 sec or so. It doesn't happen on warm starts, or when driving.
>Also can't detect it if hood is open. I don't see any signs or odors of
>fuel under hood or under car. The check valve may be leaking a bit - since
>engine starts quicker if I turn IG on for a sec or 2 before cranking, but
>this should drain back to fuel tank, and not cause odor.
>
>Another thing that may or may not be related. When I wind engine up
>driving - before it is fully warmed up, i get a smell sortof like oil
>burning off a manifold - no = smoke - just the smell. again - can't
>duplicate when warmed up - & don't see anything under hood.
>
>Checked PCV valve - it's working right. No exhaust leaks detected. Curious
>as to why these smells are in cabin.
>

Running a little fat at cold idle, maybe?