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This evening I was adding fuel additive in preparation for winterizing my vehicle. Since I didn't want to use the whole bottle I used a funnel to ensure I could control the amount of additive. When I pulled out the funnel it hooked on the inner flap of the gas filler and bent it. Can someone tell me what is the purpose of this flap? Is it needed? I would appear to me that it is a vapor barrier to prevent vapors from escaping the tank when the gas cap is removed? Does it have a name? I'm trying to decide if I should take this into the shop and have it fixed. One concern I have is if it drops into the tank .
I think I found out what this flapper is designed to do. If I have read this correct, Per TSB #06-06-04-006 it is a discharge point for static electricity. On newer models this has been eliminated because the use "metal filler style tubes". Since my flapper is still there, it should continue to function, but I will have it checked out anyway.
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Bent fuel filler flapper
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