Different engine but, With my experience the fuel cap was sometimes hard to pull off (like it was sucked on there), the filler would click serval times (in Oregon attendants fill your tank so a few times I left without a full tank) and it throw the cel too. The valve on my ride is on the block and took about 2 mins to pull out. I cycled it several times with a 12 volt source and all has been well since. Or you can just replace it for about 80-100 bucks. Super easy DIY job. Are you getting a cel?

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2001 E53 4.4 Alpine White, Sports Package
2000 E36/7 2.8 5 speed Bright Red w/ a HT!