you fill gas in it
no because if your tank leaks it is wrecked
The tank is not venting properly.
gettin the gas in
Filler neck to the gas tank
you put gas in at the top, and it hold it until it leaks or until it pumps it to the engine
Check your fuel cap or gas tank for leaks, or maybe the gas lines.
toxic
Fuel system cleaner should be added to your tank before filling up with gas.
Gas will bubble back when filling the tank if the gas is going in too fast. In most filler tubes for newer vehicles, there is a mechanism that prevents siphoning. If the gas gets trapped in this mechanism, it cannot handle the volume and it might spit some of it back.
Check for fuel leaks and proper fuel pressure.
Make sure the tank "vent" is not kinked or blocked.