Hmm. Regarding expansion, if I just make sure to fill up on the way out to drive rather than on the way home to park, does that pretty much solve it? Even with the Metro's mileage, it can't take long to burn through that bit of gas.
The canister problem I don't understand. Could someone expand on how this could kill it? I don't understand the dumping fuel into the intake comment either.
There is some possibility my canister might be dead anyway. I read a comment recently that suggested that with a functioning canister your tank won't ever go psssshhhhht when you take the cap off, and mine does sometimes.
I won't have as much of an issue with this once I have settled into a routine and am more concerned about averaging over several tanks anyway, but right now I am trying to get some good baseline data as soon as I can.
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