[jsinton]

The evap system on these cars are notorious for doing this. It's caused by you overfilling the tank until it's spilling out. The gas floods the evap system and the charcoal canister, and all the little bits of charcoal float out and plug up the evap system. It's expensive to fix, you need a new canister, and a new purge valve, then you have to clean out all the lines. It's a real PITA. A quick fix it to pull the larger hose off the canister, but then you will start getting "check engine" lights. See the hmaservice.com website for info on correcting this issue.