So update on the Camry sitch. The CEL code is P0441. The guys at the (trusted) shop have run every recommended test and have found nothing. My wife says the smell of fuel is almost overpowering while driving, which does not make me believe this is necessarily the safest problem to leave unresolved. Also smoke on startup (not replicable) and a clunking, grinding sound form the engine bay (again, not replicable).

Anyone know a Toyota guru who could lend advice? I've replaced the fuel cap with an OEM part. Not sure what else to do. I figure it's a bad hose or seal.

The only advice I've gotten so far is to leave it alone, that we'd spend more trying to diagnose and repair the problem than we would if we just waited for it to fail.

2002 Camry LE 4-cyl.