Not to mention that a quick search reveals that Teflon tape is not always gasoline resistant, meaning that if you are not careful you might be now getting little pieces of Teflon in your fuel injectors. And an even worse possibility: The tape might seal a leaky connection long enough for you to think everything is OK, and then start leaking later on when the Teflon degrades - leading to the very thing you thought to prevent.
I am not trying to antagonize here, just pointing out the possible pitfalls of fixing something that aint broke.