Gas door wont close

Often the door has to be pushed against a spring to close so when the release is pulled the door springs open a small distance

Designs that don't include a spring usually include a rubber buffer that must be compressed slightly to close the door. It isn't unusual for the rubber buffer to be left lying on a gas station forecourt though I have seen designs that include adjustable buffers that won't stay where they are adjusted to and need a spot of glue.

the filler door spring has broken and will not open the door until you get the door open to replace it.

Try pushing the gas door.Ok

If the gas door is not latching then the retainer spring may be weak even if it isn't broken. You will need to replace this.

The gas cap or the gas cover?

If the cap wont go back on then I don't know whats going on there.

If you mean the COVER or fuel door, then I would say your cable release is gummed up and sticking. Get some WD and spray the latching point on the car and then push the door in and let it spring back a couple times..spray again and repeat.....do this until the door stays shut. Then the next time you are getting an oil change get the station mechanic to spray the latch with some white lithium or other approved lubricant.

good luck and be careful.

Hello. Here is what I need you to do:

Have someone pull the gas door release. With a credit card, or something like it, popsicle stick, nail file, etc, insert it at the side of the door that opens, not the hinged side. While your assistant is pulling the lever, see if you can manually pull the door open. If it opens, you have a broken fuel door spring. Toyota parts depts sell them for 3 dollars. The spring is there to "pop" the door open, when you pull the lever. If it is broken, and they break rather often, it needs replaced.

There is A Spring or Spring type Mechanism At the Door that POPS the Door Open Once the Button has been Pushed . And when you Close the Door This Same SPRING ACTION Sorta Fights Against your Closing it. Well it Sounds to me as if this Spring Action is Not Working Properly,
Take a CLOSE Look at this and Be sure This is Working Properly, My References Do NOT Go into DETAIL on this so its Kinda a Common Sense Approach to it.

The suggested fix above did fix my problem. The problem is that a 2.5" hinged finger that pops up from the floor of the door opening to block the door. Apparently, the finger should, but doesnt go back down after the gas flap is closed. Even after I got hinged finger down (so that the sliding door would open/close all the way), it still would not go back down after the gas flap has been opened. i.e. I have to push the finger back down every time after we fill up with gas. It looks like there is a little wire/spring that should pull the finger back down, but it is off of the finger. I think that replacing this back on the finger should fix the problem permanently.

Try the salvage yard.

what you have to do is make sure door lock is in unlocked position put a flash light inside the door to see you need to get a screwdriver into the release spring area try to pry up on the hook area that flips over the piece thats mounted to the door jam it should release sounds like you need to spray wd or blaster in the lock assembly return spring not kicking back