Quote:
Originally Posted by blue62
I would go thru the EVAP system.
If flooring the gas pedal helps get it started then that points towards a too rich mixture when cranking. Flooring the gas pedal opens the throttle body butterfly allowing more air to enter.. so that leans the mixture out and helps get it started.
Now this is all guessing on my part so bear that in mind.
So look for things that could possibly cause a too rick starting mixture.
EVAP issues can do that... things like a stuck open purge valve or vacuum leaks in the hoses that connect up parts of the EVAP system or a cracked charcoal vacuum canister.
You can check the vacuum hose to the fuel pressure regulator as well (simple to do) but I do think if that was the issue it would cause problems a more times then just when you refuel.
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The more I research the problem, the more convinced I am that you're right about it being an issue with the EVAP system. Good call, blue62. After inspecting the hoses I think I'll begin with replacing the fuel vapor carbon cannister, since it seems the most likely culprit. I'm not getting a CEL and it's my understanding that a cannister issue usually won't throw a code. If replacing it doesn't solve the problem I'll look at the purge valves. In any case, I'm going to wait until my shop manual arrives before tearing into it.