im pretty sure the grommet on the filler neck of my gas tank is leaking, i can see the caked dirt at the lip of tank dampened with gas originating from the base of the filler neck
has anybody replaced this before? is it hard to do at home? do i need to drop the tank/drain the tank? any help is appreciated 


i knew that it shouldnt always be open, but this way i should replace the neck while im there anyways, i mean the neck cant be more than what? 20 bucks?